Mavic Crossmax SL MTB WheelsetComing equipped with two maxtal aluminium rims, this race-ready cross country (XC) wheelset delivers an excellent balance of strength and durability as you tackle demanding terrain conditions on your ride. Mavic has also kitted out this model with tubeless-ready technology, so you can run lower tyre pressures and benefit from tubeless benefits such as increased traction, lower rolling resistance and fewer chances of flats or punctures. Another highlight is its 6-bolt disc brake compatibility, which ensures powerful and responsive braking performance as you battle for the finish line.Cross Country Wheelset with Fore TechnologyThe rims are made with Mavic's patented Fore technology with a fully sealed upper rim bridge that eliminates the need for rim tape. This saves 30 grams per wheel, not to mention the hassles associated with tape when setting up tubeless tyres. The Infinity hub is lighter and features updated spoke lacing which increases stiffness for better power transfer, and the Instant Drive 360 freewheel with a double ratchet provides fast engagement. It's compatible with a 15x110 front axle and 12x148 rear, and comes with valves, replacement spokes and accessories.Black Shield Rim ProtectionEngineered with a specific rim profile that uses a 25mm internal width, this wheelset can boost the performance of your bike at a price that's more accessible compared to carbon wheel options. The rims also feature Mavic's Black Shield technology, which protects against scratches and dents, so you can charge hard through rock gardens and rough singletrack.Features: Rim Material: Maxtal Aluminium with hookless profile and Fore technology Finish: Black Shield rim protection Use: Mountain Bike (MTB), Cross Country (XC) Axle Size: Front: 15x110mm; Rear: 12x148mm, Boost Internal Rim Width: 25mm ETRTO: 25-622 Rim Profile: Hookless Tubeless Ready: Yes, UST tubeless Tyre Compatibility: Hookless compatible tubeless tyres Recommended Tyre Sizes: Optimised for tyres from 2.1" to 2.3" Spoke Material: Steel Spoke Count: 24 Spoke Shape: Straight-pull Wheel Hub: Infinity with QRM Auto bearing preload technology Freewheel: Instant Drive 360 Freehub Compatibility: Multiple options available to select Brake Compatibility: 6-bolt disc brake Max Rider Weight: For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels doesn't exceed 120kg, bike included ASTM Category 3: Cross country Single or Pair: Pair Weight: 1695gBuy Mavic Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Mavic Crossmax SL MTB WheelsetComing equipped with two maxtal aluminium rims, this race-ready cross country (XC) wheelset delivers an excellent balance of strength and durability as you tackle demanding terrain conditions on your ride. Mavic has also kitted out this model with tubeless-ready technology, so you can run lower tyre pressures and benefit from tubeless benefits such as increased traction, lower rolling resistance and fewer chances of flats or punctures. Another highlight is its 6-bolt disc brake compatibility, which ensures powerful and responsive braking performance as you battle for the finish line.Cross Country Wheelset with Fore TechnologyThe rims are made with Mavic's patented Fore technology with a fully sealed upper rim bridge that eliminates the need for rim tape. This saves 30 grams per wheel, not to mention the hassles associated with tape when setting up tubeless tyres. The Infinity hub is lighter and features updated spoke lacing which increases stiffness for better power transfer, and the Instant Drive 360 freewheel with a double ratchet provides fast engagement. It's compatible with a 15x110 front axle and 12x148 rear, and comes with valves, replacement spokes and accessories.Black Shield Rim ProtectionEngineered with a specific rim profile that uses a 25mm internal width, this wheelset can boost the performance of your bike at a price that's more accessible compared to carbon wheel options. The rims also feature Mavic's Black Shield technology, which protects against scratches and dents, so you can charge hard through rock gardens and rough singletrack.Features: Rim Material: Maxtal Aluminium with hookless profile and Fore technology Finish: Black Shield rim protection Use: Mountain Bike (MTB), Cross Country (XC) Axle Size: Front: 15x110mm; Rear: 12x148mm, Boost Internal Rim Width: 25mm ETRTO: 25-622 Rim Profile: Hookless Tubeless Ready: Yes, UST tubeless Tyre Compatibility: Hookless compatible tubeless tyres Recommended Tyre Sizes: Optimised for tyres from 2.1" to 2.3" Spoke Material: Steel Spoke Count: 24 Spoke Shape: Straight-pull Wheel Hub: Infinity with QRM Auto bearing preload technology Freewheel: Instant Drive 360 Freehub Compatibility: Multiple options available to select Brake Compatibility: 6-bolt disc brake Max Rider Weight: For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels doesn't exceed 120kg, bike included ASTM Category 3: Cross country Single or Pair: Pair Weight: 1695gBuy Mavic Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Pro-Lite Revo A21W Centre Lock Road WheelsetThe Revo A21W Alloy Road Disc Brake Wheelset is a disc brake specific wheelset from Pro-Lite, which features the 6-Bolt hub mount for disc rotors and stylish low profile sleeved rims.Stable and Consistent Braking ResponseThese wheels offer the perfect mix of low rotational mass, strength, and lightning fast acceleration. The Pro-Lite Revo wheels are perfect for winter training, even more so when the weather is bad and will offer exceptional performance for cyclo-cross events where braking response time and consistency are crucial. These wheels offer reactive and high-performing brake output straight away, also after long and fast winding descents and likewise at the end of a muddy off-road session.Exceptional All-RounderThese hubs have been designed to be used with the 6-Bolt disc rotor setup, which provides superb performance and easy maintenance. When this is combined with the strong rim and the Sandvik aero bladed spokes, Pro-Lite have created a wheelset that features the durability and performance to withstand terrain associated with Cyclocross and bad weather. Yet when on the open road it rolls with perfect efficiency and stability, making it a truly exceptional all-rounder.Features:Rims: Rim Type: Sleeved Alloy 6061, clincher tubeless ready Rim Finish: Shot peened Rim Depth: 21mmSpokes: Spoke Count: Front: 28; Rear: 32 Spokes: Aero-bladed Sandvik Stainless Steel Lacing: 3-crossFront Hub: Bearings: 2 (Japanese EZO) Disc Brake Mount: 6-Bolt Axle Width (O.L.D.): 100mm Skewer Type: QR or 15mm with adapters (supplied) Weight: 756g (w/o skewer)Rear Hub: Bearings: 4 (Japanese EZO) Disc Brake Mount: 6-Bolt Freehub Type: Shimano 9, 10, 11-Speed Freehub Switchable: Yes Freehub Material: Alloy Axle Width (O.L.D.): 135mm Skewer Type: QR or 12mm with adapters (supplied) Weight: 888g (w/o skewer)Buy Pro-Lite Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Pro-Lite Bracciano Dark Label A42W Aero WheelsetBased on Pro-Lite’s popular A42 model, the Bracciano A42W Wheelset has wider rims to give you better handling and grip. These road bike wheels have a fine-tuned weight distribution to add stability and make for a smoother experience, even on rough terrain. Plus, rolling resistance is a threat of the past as with the inclusion of excellent Japanese EZO bearings, you'll find maintaining your speed has never been more assured. This special edition version of the Bracciano A42W retains all the excellent qualities of its namesake, but with a sleek, stealthy look.Efficient Power TransferWith an approach to stress-testing that ensures each wheelset has endured at least six full design cycles, each with hands-on fine-tuning, Pro-Lite wheels are built to perform and keep performing. Additionally, by ensuring each spoke nipple stays as flush to the hub flange as possible, each wheel limits the amount of opposing drag, allowing for an excellent power transfer that gives exactly as much as you put in.Features:Material: Rim: Alloy 6061; Main Hubs: Aluminium; Rear Freehub: Alloy; Spokes: 2.2mm Double Butted Sandvik Stainless Steel; Nipples: Alloy 14G; Axles: AlloyFinish: Shot-peened blackRim Type: ClincherRim Internal Width: 19mmRim Depth: 42mmRim Joint Type: SleevedRim ETRTO: 19-622 Spoke Type: Aero-bladedSpoke Lacing Pattern: Front: Radial; Rear: RadialHub Bearings: Sealed Cartridge, Front: 2 (Japanese EZO); Rear: 4 (Japanese EZO) Cassette Compatibility: Shimano/SRAM or CampyAxle Type: Quick Release (QR) - front QRx100mm, rear QRx130mmTubeless Ready: Yes (tubeless kit required, sold separately)Included: Wheelset, QR skewers, 2x rim tapeEntirely hand-assembledWeight: Front: 873g; Rear: 1043gBuy Pro-Lite Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Nukeproof Cub-Scout 20 Sport Mountain BikeThe Cub-Scout 20 Sport is an agile, fast and stable kids mountain bike (MTB) that is designed, engineered and equipped with young-riders in mind. Its alloy frame, rigid fork and 20" wheels give the up-and-coming MTB enthusiasts of tomorrow a reliable platform to develop their style and confidence. It is equipped with a Shimano 8-Speed groupset, Clarks Clout hydraulic disc brakes and a superb kids-specific finishing kit from Nukeproof. It also rolls upon Boost Joytec hubs, Tubeless Ready WTB STi30 rims and high-grip Maxxis Minion DHF 2.4" tyres.Engineered for Young Off-Road Trail RidersThe Cub-Scout 20 Sport is not just another kids bike: taking inspiration from Nukeproof's award-winning Scout adult hardtail range, the Cub-Scout 20 has been designed from the ground-up as a proper mini-hardtail mountain bike. It has been designed to allow kids to learn the ropes of riding, inspire confidence on the trails and act as the perfect platform for progression. Developed and tested with the help of their own children, Nukeproof has created a class-leading lightweight kids bike range to inspire and nurture budding future World Cup or EWS winners.The range of Cub-Scout Hardtails are available in 20”, 24” or 26” options. This means that there should be a bike to suit kids of all sizes from aged 5 and up. Each bike features a lightweight custom butted 6061 Alloy frameset with bang up to date long, low and slack kids specific geometry. Kids Specific Components:Proper fit and function of components is essential for kids bikes because adult components are not optimised for smaller people. To ensure that these bikes fit and function perfectly, Nukeproof took the time to test and develop their own or work with their partners to select the best kids-specific components they could find on the market. Kid Specific parts include:Cub-Scout 20 Frame Nukeproof 20”+ Rigid forkClarkes Clout Kids Specific Hydraulic Disc BrakesNukeproof Urchin Saddle Nukeproof Urchin Handlebar (20” - 600mm/24” - 640mm/26” - 700mm)Nukeproof Urchin Grips127mm Samox 2 piece CrankWTB STi 30 TCS Rims (Tubeless Ready)Large Volume 2.4'' Maxxis Tyres to ensure grip and a smooth rideFeatures: Frame: Nukeproof Cub-Scout 20, custom butted hydro-formed 6061 Alloy, threaded bottom bracket, 142mm Bolt-thru rear axle spacing Fork: Nukeproof Cub-Scout 20”+ Fork, custom butted hydro-formed 6061 Alloy, 1 1/8th Steerer, 40mm Offset, 15x100mm Bolt-thru Axle Front Wheel: Joytec D041-15 15x100mm hub on WTB STi30 20" TCS Rim Rear Wheel: Joytec D952TSE-X12 12x142mm hub on WTB STi30 20" TCS Rim Tyres: Front & Rear: Maxxis Minion DHF 20" x 2.4”, TR Crankset: Samox TAF38J 2 Piece Crank 127mm, 32T, BCD 104 Shifter: Shimano M315 8-Speed, w optical display Rear Derailleur: Shimano M310 8-Speed Chain: KMC Z8.1 EPT 8-Speed Cassette: Sunrace CSM55 8-Speed, 11-34T Brakes: Clarkes Clout Kids Specific Hydraulic Brakes Front Rotor: Clarkes, 160mm Rear Rotor: Clarkes, 160mm Handlebar: Nukeproof Urchin 600mm Wide, 15mm Rise, 31.8mm Clamp Stem: OEM 40mm, black Saddle: Nukeproof Urchin, Black Seatpost: Nukeproof Urchin, Black, 27.2mm, 300mm Long, 0 Offset Headset: Nukeproof Warhead, 44-44 IESS Grips: Nukeproof Urchin Single Clamp lock on, 115mm Long, Soft Compound Weight: 10.02kgKey Information: Cub-Scout 20 Material: Hydroformed 6061 Triple-Butted Aluminium Fork Travel: N/A Axle to Crown: 385mm Fork Offset: 40mm Wheels Size: 20" Max Tyre Size: 2.6" Sizing: One Size Headtube: 44mm Semi-Integrated Headset: ZS44-28.6 - T2 / ZS44/30-S - B3 (For Straight Steerer fork) Seatpost: 27.2mm Seat Clamp: 31.8mm BB: Threaded 68mm BSA Rear Hub: 142x12mm Front Hub: 110x15mm Rear Axle: M12*1.5 Thread x168mm (Thread Length 17mm) Front Axle: M15*1.5 Thread x125mm (Thread Length 15mm) Chain Guide: ISCG05 Brake Mount: 160mm Direct Post Protection: Kevlar Chainstay ProtectorEasy AssemblyWhen you order a bike, one of our trained mechanics will carefully prepare and pack your bike for shipping. Upon delivery, the assembly is simple and all necessary tools and plastic pedals are conveniently included in the box.Depending on the delivery service and destination, bikes will either be delivered in a large or a small box. Below is a guide as to how your bike will arrive: All bikes for delivery within the UK and Republic of Ireland will be delivered in a large box, except for balance bikes and BMX bikes, which are always delivered in manufacturer’s boxes. All bikes for delivery within the EU on a standard service will be delivered in a large box. If an express delivery option is chosen, your bike will be packed into a small box. Again, the exception is balance bikes and BMX bikes, which are always delivered in manufacturer’s boxes. All bikes for worldwide delivery outside the EU will be delivered in small boxes.This video demonstrates assembly from a SMALL BOX.This video demonstrates assembly from a LARGE BOX.Please note that due to ongoing issues in the global bike supply chain, manufacturers may substitute certain component items due to availability. In this situation, they will be replaced with the same quality or better performing parts.Buy Nukeproof Bikes from Chain Reaction Cycles, the World's Largest Online Bike Store.
Tern Link B7 Folding BikeA versatile ride that's kitted out with modern-geometry frame and superb component spec at an excellent price-point, this urban speeder is ideal for all of life's adventures on two wheels. It's fitted with a Shimano 7-Speed drivetrain that soars you to the top of the steepest hills with ease and its powerful V-Brakes control your momentum in all-weather conditions. And, this urban bike folds easily for storage or transport in just 10-seconds, so it fits into the speed and efficiency of modern life perfectly. Folds Quickly and Efficiently for Easy Storage and TransportThis Link-model folds quickly and is easy to store in a locker, under your desk at work or by the coffee table in your favourite café. This journey-companion bridges the gap between transport and convenience and ensures stiff and reliable performance throughout use. Shimano 7-Speed Drivetrain and Powerful V-BrakesPowered on by a Shimano Tourney 7-Speed drivetrain to rocket you around the urban jungle with pace, efficiency and style, while its exceptional V-Brakes scrub speed rapidly with their confidence-inspiring stopping power. Plus, both the saddle and handlebar's positioning are adjustable, so you can fine-tune your rides comfort to ensure maximum comfort on every ride. Features: Folded Size: 38 x 80 x 74 cm Frame: Tern Link, Aluminium, FBL 2 Joint Fork: Hi-Tensile Steel Drivetrain: Shimano Tourney, 7-Speed Brakes: V-Brake, Aluminium, linear spring Cassette: Shimano 14-28T, 7-Speed Tyres: Impac StreetPac, 47-406 Max Load Weight: 105kg (231.5lb) Weight: 12.1kgExtras: Bell: Aluminium Kickstand: Deluxe centre mount Clip System: Magnetix 2.0 Luggage Socket: NoBuy Tern Bikes from Chain Reaction Cycles, the World's Largest Online Bike Store.
Tern Link B7 Folding BikeA versatile ride that's kitted out with modern-geometry frame and superb component spec at an excellent price-point, this urban speeder is ideal for all of life's adventures on two wheels. It's fitted with a Shimano 7-Speed drivetrain that soars you to the top of the steepest hills with ease and its powerful V-Brakes control your momentum in all-weather conditions. And, this urban bike folds easily for storage or transport in just 10-seconds, so it fits into the speed and efficiency of modern life perfectly. Folds Quickly and Efficiently for Easy Storage and TransportThis Link-model folds quickly and is easy to store in a locker, under your desk at work or by the coffee table in your favourite café. This journey-companion bridges the gap between transport and convenience and ensures stiff and reliable performance throughout use. Shimano 7-Speed Drivetrain and Powerful V-BrakesPowered on by a Shimano Tourney 7-Speed drivetrain to rocket you around the urban jungle with pace, efficiency and style, while its exceptional V-Brakes scrub speed rapidly with their confidence-inspiring stopping power. Plus, both the saddle and handlebar's positioning are adjustable, so you can fine-tune your rides comfort to ensure maximum comfort on every ride. Features: Folded Size: 38 x 80 x 74 cm Frame: Tern Link, Aluminium, FBL 2 Joint Fork: Hi-Tensile Steel Drivetrain: Shimano Tourney, 7-Speed Brakes: V-Brake, Aluminium, linear spring Cassette: Shimano 14-28T, 7-Speed Tyres: Impac StreetPac, 47-406 Max Load Weight: 105kg (231.5lb) Weight: 12.1kgExtras: Bell: Aluminium Kickstand: Deluxe centre mount Clip System: Magnetix 2.0 Luggage Socket: NoBuy Tern Bikes from Chain Reaction Cycles, the World's Largest Online Bike Store.
RockShox Revelation RC Solo Air Boost ForkBuilt for the demands of modern MTB trail-riding, this fork features a rock-solid aluminium construction for tackling whatever challenges the mountain throws at you on your ride. RockShox has also equipped this model with Boost axle spacing, so you'll benefit from stiffer and more responsive handling as you navigate from trail to trail and charge through rock gardens and trailside obstacles.Solo Air Air-Spring and RC DamperFeaturing a Solo Air air spring, this MTB fork lets you add air to your forks through a single Schrader valve, filling both the positive and negative air spring chambers simultaneously. This results in light, plush, and predictable performance that can be set up in seconds. Another highlight is its RC damper, which allows you to dial in your favourite settings for a more customised suspension feel as you conquer your way around the mountain.BoostBoost is the standard wheel and drivetrain specification that opens the opportunity for improved frame geometry with shorter chainstays, wider and stiffer suspension pivots, a wider range of chainring options, as well as more clearance for bigger tyres and wider, stiffer wheels.Features: Material: Aluminium Use: Mountain Bike (MTB) Steerer Diameter: 1 1/8-1.5" tapered Axle Size: 15x110mm (Boost) Air Spring: Solo Air Damper: RC Brake Type: Disc BrakeBuy RockShox Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Eagle XG-1299 CassetteReady for hitting the trails, this high-quality mountain bike (MTB) 12 speed cassette offers excellent durability combined with proven SRAM technologies for dependable performance wherever your ride takes you. Part of the renowned Eagle series, this model is lighter, simpler, tougher as well as easier to use. Engineered for increased strength, while keeping its weight to a minimum, it's also a great choice of upgrade for riders who want to enjoy smoother, quieter shifting operation on their trail adventures.MTB Cassette with X-Dome TechnologyThe X-Dome Eagle cassette has no peer. It buried the last dangling shred of an argument in favour of a mountain bike front derailleur. And now, its 10-50 tooth gear range has opened the door for an entire ecosystem of Eagle groupsets. Designed for use with SRAM's proven, reliable XD driver body, this 12 speed cassette offers an optimal 500-percent gear range. In independent tests the X-Dome architecture is proven to yield one of the strongest cassettes on the market. Updated shifting characteristics improve both inboard and outboard shifting, as well as chain retention. This cassette matches up perfectly in performance and colour to XX1 Eagle AXS enabled componentry.Features: Cog Finish: Rainbow Use: MTB Speed: 12 speed Gearing: 10-50T Cog Sizes: 10-50T: 10,12,14,16,18,21,24,28,32,36,42,50 Technology: XGTechnologies: X-Dome: X-Dome technology creates an incredibly lightweight, precise and strong cassette. The open design aids in mud clearance, giving you cleaner shifting performance and longer component life. Eagle: Eagle technology represents updated 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features revised 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 520%, which is equal to 2x11 drivetrains. X-Glide 2: X-Glide 2 is next generation of SRAM X-Glide technology optimised for the Eagle 12-speed cassette. It provides quick, precise, power-on shifting performance throughout the gear range, and increases chain retention on larger cogs. XD Driver Body: XD is a cassette driver body design that allows the use of a 10-tooth small cog and provides an improved interface with the cassette. Rainbow Colourway: Is perfectly matched to work with XX1 Eagle AXS. Updated shifting features create a smoother, quieter system with enhanced inboard and outboard shift performance. XD driver body compatible.Manufacturer's Part Number: 00.2418.098.000Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Suunto 7 GPS WatchThe Suunto 7 GPS Watch is the smartwatch that features a wrist-based heart rate monitor, over 70 different sports modes, offline maps, and everyday features from Wear OS by Goggle.AdventureThe Suunto 7 is constructed from ultra-rugged materials, designed and tested in Finland. The watch is therefore shockproof, waterproof, and dirtproof allowing you to face even the most extreme environments without fear.CustomisationThe watch is fully customisable - you can change up the watch face, the straps are interchangeable, and you download additional apps via Goggle Play.MusicTake control of your music with your wrist. The Suunto 7 allows you to control the music playing on your phone from the watch face.Powered with Wear OS by GoggleKeep on track with your day with Wear OS that allows you to check your calendar, to-list, who’s calling, and incoming messages. You can also use the watch to make contactless payments.MapsThe watch comes with a huge variety of ways to stay routed. You can unleash tonnes of free offline outdoor maps or follow the most popular routes with built-in heatmaps.Share Your StatsYou can connect to popular services like Strava, Endomondo and TrainingPeaks, or share your training stats on the Suunto app.SportsThe Suunto 7 allows you to accurately track all your sporting endeavours with easy one-button access to 70+ sports modes, GPS and wrist based heart rate sensor.In the BoxSuunto 7 GPS WatchUSB cable1 additional strap loopQuick guideInternational limited warranty leafletSafety and regulatorySpecificationsDimensions: 50mm x 50mm x 15.3mmWrist Size: 130-230mmStrap Width: 24mmWeight: 70gBezel Material: Stainless steelGlass Material: Gorilla glassCase Material: Glass fibre reinforced polyamideStrap Material: SiliconeBattery Type: Rechargeable lithium-ionBattery Indicator: Percentage/iconWater Resistance: 50mLanguages: EN, CS, DA, DE, ES, FI, FR, IT, JA, KO, NL, NO, PL, PT, RU, SV, TH, TR, ZH-HANS, ZH-HANTDisplay Brightness Adjustment: Manual and automaticDisplay Brightness: Up to 1000 nitsButton Lock: During exerciseDisplay Type: AMOLEDDisplay Resolution: 454 x 454Touch Screen LockTouch DisplayColours DisplayVibration AlertFeaturesOver 70 sport modesFree offline outdoor mapsWrist-based heart rate monitorWater resistant up to 50mGoogle FitGoogle AssistantGoggle PayGoogle PlayBuy Suunto Run GPS from Chain Reaction Cycles, the World's Largest Online Bike Store.
Prime RR-38 V3 Carbon Clincher WheelsetDesigned for everything from racing to training, this versatile wheelset from Prime is made to out-perform on the track, whatever your discipline. Made from a unidirectional carbon fibre material, it is exceptionally durable and stiff, so it can withstand whatever challenges you meet on the trail. Featuring a revised wider rim profile, this wheelset offers reliable aerodynamics, comfort, speed and traction to your bike.Customisable WheelsetDeveloped for victory, this clincher wheelset is also designed to look as amazing as it performs thanks to its customisable design. Prime has kitted out this version with grey stickers already applied, but sticker packs are also available separately in a range of different colours. This means that you can benefit from its eye-catching finish and customised look that matches your ride as you battle for the silverware.Features: Rim Material: T700 UD Carbon Fibre Rim: 19mm internal, 27.5mm external, 38mm deep Hubs: R020, CNC machined 6061 Alloy hub body, Shimano/SRAM 9/10/11 speed freehub Spokes: Pillar PDB 1415, double-butted Tape: Tubeless Tape factory applied Hub Bearings: Front: 2x 689; Rear: 1x 6802 & 1x 15267; Freehub: 2x 6902 ERD: 563mm Spoke Length: Front Drive Side: 272mm; Front Non-Drive Side: 272mm; Rear Drive Side: 275mm and Rear Non-Drive Side: 278mm In The Box: Prime QR skewers, Prime Carbon Brake Pads and 10-speed adaptor Shimano/SRAM 9,10,11-Speed compatible (Campagnolo and XDR freehubs sold separately) Rider Weight Limit: 100kg Weight: 1520gPrime Crash Replacement ProgrammeAt Prime, we understand that a crash or unexpected accident may occur under normal riding conditions. If in the event of a fall or accident where your Prime product sustains damage beyond repair, you can return the damaged component in exchange for a new product at 40% off the RRP.Please note that the Prime Crash Replacement Programme is only valid for the original purchaser within 2 years of purchase.Buy Prime Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Prime Primavera 85 Carbon Rim Brake Front Wheel Wider = Improved PerformanceReady for racing, this front wheel features an 85mm deep aero profile that delivers more speed for the same effort. Ideal for time trial (TT) and triathlon (tri) racing, this model was developed with Team Spectra in search of the marginal gains that could help them in some of the UK's biggest races. By using a wider rim profile, it creates a more linear contour with the tyre to increase the Primavera 85's aerodynamic properties.Greater Strength To Weight RatioBuilt up using a SR1 CNC machined 6061 alloy hub and DT Swiss straight pull spokes, this model creates a stiffer wheel with a greater strength to weight ratio and more reactivity. Featuring an incorporated notch, the newly developed shape of the end caps simplifies disassembly significantly and therefore makes maintenance even easier.Aero AdvantageIf you're looking for an advantage in your next TT or Triathlon event, the Prime Primavera 85 Carbon Rim Brake Front Wheel is a perfect choice of upgrade to improve your ride.Lightweight RimPrime has experimented with numerous types of resin and tested countless new lay ups before they settled on the new and improved Primavera 85 rim. But that's not all, they've upgraded to a higher grade of carbon, saving precious grams, and improving on the impact strength/weight ratio making the new Primavera 85 their best rim yet.Features: Rim Material: T800 UD Carbon Fibre Use: Time Trial (TT) and Triathlon (Tri) Axle Size Compatibility: Front: 100x9mm QR Rim Width: 20.3mm (internal); 27.5mm (external) Rim Depth: 85mm Rim Type: Clincher Hub: SR1 CNC machined 6061 Alloy hub body Hub Bearings: 2x 699 Spokes: Aerolite, 226mm Tubeless Ready: Yes UCI Approved: Yes Brake Type: Rim Brake Rider Weight Limit: 100kg Weight: 888gIn The Box: 2 spare spokes 2 nipples Tubeless Valve QR Skewer Prime Carbon brake padsSpares (available separately)SR1 Front Axle Silver QRSR1D QR Front End Caps Black QRPrime Crash Replacement ProgrammeAt Prime we understand that a crash or unexpected accident may occur under normal riding conditions. If in the event of a fall or accident where your Prime product sustains damage beyond repair, you can return the damaged component in exchange for a new product at 40% off the RRP.Please note that the Prime Crash Replacement Programme is only valid for the original purchaser within 2 years of purchase.Buy Prime Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Prime Primavera 56 Carbon Disc Rear WheelDeveloped with Team Spectra for flat road races as well as time trial and triathlon racing, this rear wheel features a stiff and lightweight T800 UD carbon fibre rim construction to give you maximum performance without adding any unnecessary excess grams to your ride. Prime has also put this version through its CFD testing process, where multiple sizes and shapes were used before coming up with the perfect blend of strength, weight and aerodynamics.Greater Strength To Weight RatioBuilt-up using an SR1D, CNC machined 6061 alloy hub body and DT Swiss straight pull spokes, the Prime Primavera 56 Carbon Disc Rear Wheel creates a stiffer wheel with a greater strength to weight ratio and more reactivity. Its Star Ratchet hub also provides superior reliability, due to each of the ratchets engaging simultaneously every time. Prime has also ensured that tool free freehub conversion is possible. Coming kitted out with an incorporated notch, the newly developed shape of the end caps simplifies disassembly significantly and therefore makes maintenance even easier.Tubeless Ready Carbon Rear WheelDeveloped to give modern riders and racers a much-needed performance upgrade, this rear wheel comes kitted out with tubeless ready technology. This means that you can choose to run it tubeless and enjoy advantages such as the ability to run lower tyre pressures for increased stability, comfort and fewer chances of flats or punctures.Features: Rim Material: T800 UD Carbon Fibre Use: Road, Time Trial (TT) and Triathlon (Tri) Axle Size Compatibility: 142x12mm Rim Width: 23mm (internal); 30mm (external) Rim Depth: 56mm Rim Type: Clincher Hub: SR1D, CNC machined 6061 Alloy hub body Freehub: Shimano/SRAM 9/10/11 speed Hub Bearings: 1x 6902, 1x 17287, Freehub: 2x 6802 Spokes: Straight Pull DT Aerolite (non-drive), DT Aero Comp (drive side) Tubeless Ready: Yes UCI Approved: Yes Brake Type: Disc Brake Disc Mount: Centre Lock Rider Weight Limit: 110kg Weight: 955gIn The Box: 2 spare spokes 2 nipples Tubeless Valve QR Skewer 10 speed spacer QR end capsSpares (available separately)54 Tooth Star Ratchet Upgrade Kit Black One SizeSR Hub Bushing Black 12mmStar Ratchet Grease Neutral 100mlSR1D 12mm Rear End Caps Black 12mmSR1D QR Rear End Caps Black QRSR1D Rear Axle Silver 12 x 142mmSR Freehub Body - Campagnolo Black 9/10/11 SpeedSR Freehub Body - Campagnolo 13 Speed Black 13 SpeedSR Freehub Body - Shimano Black 9/10/11 SpeedSR Freehub Body - XDR Black 12 SpeedPrime Crash Replacement ProgrammeAt Prime we understand that a crash or unexpected accident may occur under normal riding conditions. If in the event of a fall or accident where your Prime product sustains damage beyond repair, you can return the damaged component in exchange for a new product at 40% off the RRP.Please note that the Prime Crash Replacement Programme is only valid for the original purchaser within 2 years of purchase.Buy Prime Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Garmin Edge 830 Performance BundleThis Performance Bundle from Garmin includes an Edge 830 cycle computer that features an aerodynamic shape, enhanced navigation and safety features and a speed, cadence and heart rate sensor, so you have everything you need to get the most out of training.Edge 830 Cycle ComputerGarmin’s Edge 830 cycle computer comes with dynamic performance monitoring that provides you with key insights into every area of your cycling performance including VO2 max, recovery, training load focus, heat and altitude acclimation, nutrition, hydration and more. Key safety features also include a new bike alarm, group messaging and tracking, incident detection and compatibility with Varia. Routable Garmin Cycle Map with popularity routing gives you the best possible customisable routes that let you ride like a local.Performance BundleThe bundle provides even further metrics and insights into your performance with the greatest of accuracy including three different kinds of sensor including a speed sensor, a cadence sensor, and a heart rate monitor. The sensors connect and feed straight back to the cycling computer. The out-front mount provides a great viewpoint for the computer that creates comfortable positioning.In the BoxEdge 830 cycling computerFlush out-front mountStandard mountSpeed sensorCadence sensorHeart rate monitorTetherUSB cableManualsFeaturesResponsive device features a larger, 2.6’’ colour touchscreen display and a compact aerodynamic form factorUp to 20 hours of battery lifeClimbPro feature shows remaining ascent and grade when you’re climbing while following a route or courseCustomisable with free apps, widgets and data fields from the Connect IQ StoreRoutable Garmin Cycle Map with popularity routing which helps you to ride like a localOn-device route creation with off-course recalculation and back to startCycling safety features include new bike alarm, group messaging and tracking, incident detection and compatibility with VariaMountain bike specific dynamics that track jump count, jump distance and hang timeNew GRIT feature shows the difficulty of a rideNew FLOW feature measures how smoothly you descend a trail giving you a score to beat next timeDynamic performance monitoring provides insights on your VO2 max, recovery, training load focus, heat and altitude acclimation, nutrition, hydration and moreScreen Size: 2.6"Screen Pixels: 246 x 322 pixelsSmartphone Compatibility: iPhone, Android.Power Meter Compatible: YesBattery Life: Up to 20 hoursInternal memory: 16GBWeight: 79.1gPlease Note: Garmin GPS Cycle Computers come with maps for UK and Europe - Other regions are available from Garmin separately.Buy Garmin Nutrition & Training from Chain Reaction Cycles, the World's Largest Online Bike Store.
NS Bikes Zircus 24 Kids BikeThe NS Bikes Zircus 24 is a stable, agile and stylish mountain bike for junior riders. Give your little shredder a ride that they can progress their riding style on while ensuring the utmost durability and control, this bike is what younger riders dream of. It features a custom-formed alloy frame, Suntour suspension forks and an ultra-efficient single-speed drivetrain. Plus, it has a powerful disc brake at the rear and a reliable V-brake at the front, giving your little one confidence-inspiring braking performance in weather conditions.Modern Alloy Frame with Responsive Freestyle GeometryRelease your desire for speed, control, agility and airtime, the NS Bikes Zircus 24 engineered using fantastic materials and is equipped with awesome components to match. It features modern freestyle geometry, so you get the most out of every trail ride, jump and gap, while being equipped with SR Suntour XCT suspension forks, a superb drivetrain and immense wheels to keep you up to speed with the competition.SR Suntour Suspension Forks and Single-Speed DrivetrainThis dependable Dirt Jump steed features SR Suntour suspension forks at the front to smooth out harsh landings and increase your momentum as you flow between berms to jumps. Its drivetrain consists of a strong and flex-free Lasco crankset that includes a 32-tooth chainring and integrated bash guard to protect it. And, a V-Brake at the front and disc brake at the rear gives you sensational control over your momentum when approaching any feature.Lightweight, Durable and Stylish Kids BikeWith NS Bikes lightweight and strong custom-formed 6061 aluminium frame construction at its core, this fast and nimble ride is ready to pop off jumps and will launch you from feature to feature with the greatest precision and composure. A wheelset built from NS hubs and NS JR rims wrapped in Kenda Small Block 8 tyres rolls you anywhere on the trail with stability and pace. Plus, a finishing kit from Octane One and NS Bikes wraps up this sensational NS Bikes Zircus 24 Kids Bike build perfectly.Features: Frame: NS AL6061-T6 custom formed and butted tubes, 135x10mm dropouts Forks: Suntour XCM 24', 50mm travel, 9mm axle, soft spring, 1&1/8” steerer tube Headset: FSA semi-integrated ZS44/ZS44, cartridge Stem: NS Drop 31.8, 50mm, angle +10° Handlebar: NS 31.8, 660mm 20mm rise Grips: WTP Arrow 115, kids spec Seatpost: Kalloy 30.9mm Saddle: Octane OneRocker JR Front Brake: Alhonga v-brake Rear Brake: Tektro MD-M300 Aries 160mm Rims: NS JR 24”, 32h Spokes: Spokes w/14mm nipples Front Hub: NS 100x9mm bolt-on Rear Hub: NS 135x10mm single speed, 10T driver Tyres Front / Rear: Kenda Small Block 8 24x2.1" Crankset: Samox 152mm 26t Bottom Bracket: FSA BSA square taper 68mm Pedals: NS Nylon JR Chain: PYC P510H, 1spd Weight: 12.1kgEasy AssemblyWhen you order a bike, one of our trained mechanics will carefully prepare and pack your bike for shipping. Upon delivery, the assembly is simple and all necessary tools and plastic pedals are conveniently included in the box.Depending on the delivery service and destination, bikes will either be delivered in a large or a small box. Below is a guide as to how your bike will arrive: All bikes for delivery within the UK and Republic of Ireland will be delivered in a large box, except for balance bikes and BMX bikes, which are always delivered in manufacturer’s boxes. All bikes for delivery within the EU on a standard service will be delivered in a large box. If an express delivery option is chosen, your bike will be packed into a small box. Again, the exception is balance bikes and BMX bikes, which are always delivered in manufacturer’s boxes. All bikes for worldwide delivery outside the EU will be delivered in small boxes.This video demonstrates assembly from a SMALL BOX.This video demonstrates assembly from a LARGE BOX.Buy NS Bikes from Chain Reaction Cycles, the World's Largest Online Bike Store.
GT Pro Series Heritage 26 BMX BikeThe GT Pro Series Heritage 26 rolls upon 26" wheels and features modern engineering techniques and components with old-school GT Heritage styling. Taking inspiration from the early days of BMX riding, this bike looks the part and rides with sensational stability, comfort and control. It's ideal for riding at skateparks, for cruising around town and for launching off lips at your local dirt jumps. Inspired by the past for the movement of today. The Pro Series line is purpose-built with the input of GT's Bike Life Coalition to hold up to any session with your squad. Hone your skills as you raise it up in the street and become the king of your neighbourhood.Features: Frame: GT Pro Series Design, 6061 Alloy, Dt Gusset, Mid Bb, 135mm Hub Spacing, Disc Brake Mount, Integrated 1-1/8" H/t W/ Removable Rotor Tabs Fork: GT Pro Design, 100% Chromoly 2pc. Steerer, Tapered Legs, 3/8" Axle Dropouts Chain: KMC Z410 Crank: GT Power Series Chromoly 3pc., 170mm Arms, 19mm X 8t Chromoly Spindle, GT 25t Steel Chainwheel Bottom Bracket: Mid Sealed Bearing Pedals: GT Low Profile Fs Platform Design Cog Set: 16t Freewheel Rims: Alloy Double Wall, 36h Tyres: GT Smoothie 26 X 2.5" Front Hub: Alloy Body, Sealed Bearings 3/8" Axle, 36h, 15mm Nut Rear Hub: Alloy Thread-on Disc Body, Sealed Bearings, Chromoly 3/8" Slotted 14mm Axle, 36h, 17mm Nut Spokes: Stainless Steel, 14g Brakes: Promax Mech Disc, 160mm Rotors Rear Brake: Promax Mech Disc, 160mm Rotors Brake Levers: Alloy, 2 Finger Handlebar: GT Pro Series Cheat Code 2pc. 100% Chromoly, 7.875"H X 31.5"W, 5°up, 11° Back Stem: GT Front Load, 1-1/8", Cold Forged Cap, 10mm Rise, 40mm Grips: GT Super Soft Flanged 155mm Single Compound W/ GT Removable Plug Headset: 1 1/8" Integrated Design, 45x45 Degree Sealed Bearings Saddle: GT Cheat Code Railed Seat Post: Alloy Micro Adjust 27.2 X 300mm Extras: Alloy Knurled Pegs, 3-piece Pad SetPlease note: this bike is for use on BMX tracks and skate parks. In many countries, it is illegal to use this bike on public roads without using the two independent braking systems provided (a front and rear brake).Buy GT Bikes from Chain Reaction Cycles, the World's Largest Online Bike Store.
GT Aggressor Expert 29 Hardtail BikeWhether you're riding fast singletrack, sessioning challenging descents or spending long days in the saddle for all-mountain adventures, the Aggressor Expert is ideal for any challenge you throw at it. It features GT's Triple Triangle aluminium frame design, SR Suntour suspension, a 3x8-Speed drivetrain and Tektro hydraulic disc brakes. This bike provides a versatile performance output that's suited to riding anywhere on the mountainside.Features: Frame: GT 6061 T6 Aluminium Frame, Triple Triangle w/ Floating Seat Stays, Forged Drop-outs w/ Disc Brake Mounts, Zero Stack 1 1/8" Head Tube, 29" Wheels Fork: SR Suntour XCM-DS, 80mm, Hydraulic Lockout and Preload, Coil Headset: Semi-integrated, Sealed Cartridge Stem: GT All Terra, 6061 Alloy, 31.8, 8° Handlebar: GT All Terra Alloy Riser, 25mm Rise, 8° Sweep, 6° Rise, 720mm Width Grips: GT Statement Shifters: Shimano SL-M315, 8-Speed Brakes: Tektro M275 Hydro Disc, 160/160mm Rotor Crankset: Shimano TY301, 42/34/24t Bottom Bracket: Cartridge, Square Taper Chain: KMC Z8.3, 8-Speed Cassette: Shimano Acera, 12-32, 8-Speed Front Derailleur: Shimano TY700 Rear Derailleur: Shimano Tourney, 8-Speed Tyres: WTB Ranger Comp, 29x2.25", DNA Compound Rims: WTB SX19, 32H Front Hub: Alloy Disc, QRx100m Rear Hub: Sealed Alloy Disc, QRx135mm Saddle: GT MTB Seatpost: GT All Terra Two Bolt AlloyEasy AssemblyWhen you order a bike, one of our trained mechanics will carefully prepare and pack your bike for shipping. Upon delivery, the assembly is simple and all necessary tools and plastic pedals are conveniently included in the box.Depending on the delivery service and destination, bikes will either be delivered in a large or a small box. Below is a guide as to how your bike will arrive: All bikes for delivery within the UK and Republic of Ireland will be delivered in a large box, except for balance bikes and BMX bikes, which are always delivered in manufacturer’s boxes. All bikes for delivery within the EU on a standard service will be delivered in a large box. If an express delivery option is chosen, your bike will be packed into a small box. Again, the exception is balance bikes and BMX bikes, which are always delivered in manufacturer’s boxes. All bikes for worldwide delivery outside the EU will be delivered in small boxes.This video demonstrates assembly from a SMALL BOX.This video demonstrates assembly from a LARGE BOX.Please note that due to ongoing issues in the global bike supply chain, manufacturers may substitute certain component items due to availability. In this situation, they will be replaced with the same quality or better performing parts.Buy GT Bikes from Chain Reaction Cycles, the World's Largest Online Bike Store.
Selle Italia SLR Boost Tekno Superflow SaddleEngineered for the best balance of lightness, comfort and performance, this versatile saddle well-equipped for road, gravel and endurance cycling. Designed in collaboration with Dallara, it features a high-quality carbon design that includes a full carbon cover construction as well as hi-tech carbon rails. This combination ensures maximum stiffness and strength while also keeping its overall weight impressively low with the S3 option weighing only 90g and the L3 option weighing 100g. Multi-Discipline Saddle with Superflow TechnologyWhether you're clocking up the miles on an endurance ride, competing in a road racing event or exploring countryside back roads on your gravel bike, this saddle is developed for performance. Coming kitted out with Superflow technology, it uses its special central relief channel that runs down its middle section to relieve any pressure or fatigue from around your sit bones. As a result, you'll benefit from increased comfort and support, making it perfect for going the extra distance. Another highlight is this model's neutral shape that's ideal for riders with dynamic riding positions and those who like a more upright riding experience. Coming complete with a sleek, eye-catching finish, this is a great choice of upgrade for riding with speed, comfort and style.Features: Cover Material: Full Carbon Rails Material: Hi-Tech Carbon rail Use: Road, Gravel and Endurance Dimensions: S3 Option: 130x248mm; L3 Option: 145x248mm Central Cut Out: Superflow channel Shape: Neutral shape idmatch: S3 and L3 options available to select Weight: S3 Option: 90g; L3 Option: 100gTechnologies: Hi-Tech Carbon Rails: High modules carbon fibre weave, ø7x9mm. Superflow Channel: The SuperFlow technology drastically reduces all physical limitations caused by prolonged pressure in the perineal area. Neutral Shape: Neutral shape is recommended for individuals with both Anterior (Dynamic Rider) and Posterior (Static Rider) Pelvic Tilt.Manufacturer's Part Numbers: 041A922WCA001 Black L3 041A522WCA001 Black S3Buy Selle Italia Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
CeramicSpeed OSPW System Campagnolo 12s EPS GoldFeaturing a moulded carbon fibre cage, this special limited edition OSPW System offers the best balance of low weight and durability. It is developed specifically for the Campagnolo 12 speed EPS system and offers a three-spring tension setting that allows for optimal setup based on riding conditions.Limited Edition Campagnolo OSPW SystemLike every other CeramicSpeed Oversized Pulley Wheel System, this is developed, designed and handbuilt in Denmark. It is available with either CeramicSpeed Standard or Coated pulleys (choose option from the menu) with a lifetime CeramicSpeed warranty on the coated version and four years CeramicSpeed warranty on the standard version.The system is not compatible with 12 speed mechanical.Features: Pulley Wheel Material: Aluminium Cage Material: Carbon reinforced PA Use: Road Speed: 12 speed Pulley Wheels: CeramicSpeed 13-tooth upper and 19-tooth lower Bearing Options: CeramicSpeed Standard or Coated (choose from the menu) Compatibility: Campagnolo 12-speed Super Record EPS (electronic). Please note, the system is not compatible with 12-speed mechanical Cassette Compatibility: Fits cassettes from 11 to 34-tooth Spring Tension Settings: 3 spring tension settings Ceramic Speed Pulley OilBuy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
◌CeramicSpeed OSPW System Shimano R9200-R8100The OSPW System Shimano R9200-R8100 from CeramicSpeed is designed and engineered to enhance performance for the Shimano 9200 and R8100 series rear derailleurs. It features an integrated stop tower for simple installation and durability, and it significantly enhances gear shifting performance.The CeramicSpeed Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world. This OSPW System has hand built CeramicSpeed Bearings installed in each pulley and comes with a 4-year warranty as standard and a lifetime warranty when choosing coated bearings. CeramicSpeed OSPW Systems are an industry-leading product, chosen by World Champions and top athletes around the world. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. For 8100 derailleurs, the cage uses the factory derailleur body washer. 9200 derailleurs will require the new included derailleur body washer. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men's and Women's Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users. This OSPW System has hand built CeramicSpeed Bearings installed in each pulley and it comes with a four-year manufacturer's warranty as standard. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with standard CeramicSpeed Bearings. Also included in the box is a 15ml dropper bottle of CeramicSpeed Bearing Oil. Technical DataThe overall power savings of the OSPW System for Shimano 9200 reach 30%-60%, or more in some cases, over a stock setup. The oversized pulley wheels have 3-5 times longer lifetime than the commonly used standard pulleys on the market. Maintenance of CeramicSpeed OSPW SystemsRegarding the maintenance of your OSPW System, it is important that you properly lubricate your bearings in order to ensure optimal performance and maximum longevity. Add oil by using the lubrication points on the back cage plate, so that oil can penetrate the bearing. Do this when you lubricate your chain, if you have washed your bike or after riding in wet or muddy conditions. Please note: While there are visual similarities in the 9100 Series OSPW and 9200 Series OSPW, the spring tension settings, rotation stop tower placement, and mounting pin depth are slightly repositioned and as such the systems are not cross-compatible. Features: Pulley Wheel Material: Aluminium Cage Material: Carbon Reinforced PA Bearings: Standard or CeramicSpeed bearings (multiple options in the selection menu) CeramicSpeed Grease/Oil: Pulley Oil (Standard) Use: Road Speed: 12-Speed Compatibility: Shimano Dura Ace 9200 / Ultegra 8100 Cassette Compatibility: Fits 11-30T and 11-34T Shimano 12 speed cassette Spring Tension Settings: 4 spring tension settings In The Box: A complete 13-tooth/19-tooth OSPW System, CeramicSpeed Bearing Oil in 15ml dropper bottleTechnologies: Integrated stop tower for simple installation and durability Lifetime warranty on system cage Trusted design by World Champions and top athletes around the world 13/19 pulley wheel sizes Standard or CeramicSpeed bearings (multiple options in the selection menu) Hand built CeramicSpeed bearings are installed in each pulleyBuy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.