The HollowTech II 12-speed Ultegra chainset with integrated power meter offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders Accurately calibrated strain gauges are integrated inside the crank arm, this provides a stable measurement system through rotation from both sides for extremely precise data +/-2% accuracy of strain gauge measured power Bluetooth and ANT+ with wireless firmware update and data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system HollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load The chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transfer Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight Wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mm A wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplines HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability(sold separately)
Zipp's 101 XPLR Wheels are purpose built for gravel and adventure riding. Using their innovative single-wall MOTO carbon rim technology, the 101 XPLR provides a super smooth and compliant ride for all day comfort and more traction over rough terrain.Single-wall MOTO carbon fibre rim provides excellent compliance, vibration damping and reduced chance of pinch flatting27mm wide internal profile is ideal for wider, higher volume gravel & adventure tyresTubeless compatible for more traction in rough corners and ability to run lower tire pressureZR1 hubset for better seal design for improved durability and quicker response with 66 points of engagementLifetime WarrantyThe 101 XPLR (short for explore) is purpose-built for riders searching for adventure beyond the norm. Think of it as a magic carpet ride over primitive roads, especially with large tubeless tires at lower tire pressures thanks to the 27mm ID tubeless rim. This wheelset is ideal for gravel racing, adventure, or any long day in the saddle. Based on Zipp s MOTO Technology, the 101 XPRL s single-wall rim construction provides excellent compliance and vibration damping. The 101 XPLR features the ZR1 hubset for better seal design for improved durability and quicker response with 66 points of engagement. If you want the ultimate gravel & adventure wheelset for your bike, the Zipp 101 XPLR is the best choice around!
The new Shamal Ultra C17 represents the same fantastic performance that has made it THE go-to aluminium race wheel for the better part of two decades while adding even more versatility and performance. The new, wider profile means the C17 standard is perfect for use with the increasingly popular 25/28mm tyre sizes. USB Bearings are ceramic which vastly reduces the weight and greatly improves the smoothness of the bearings. The ceramic ball bearings inside also mean that maintenance will be far less common and it has a much higher resistance to corrosion than standard bearings. The Mega-G3 Spoke pattern is a type of spoke assembly that improves energy transfer between the hub, which reduces stress on the right-hand side which in turn increases the rigidity of the wheel. This is achieved by having twice as many spokes as the left-hand side. The new C17 also allows for a more sure-footed grip in addition to increased comfort while increasing rigidity and thus reactivity at the same time thanks to its wider stance and optimized material usage. Features: Toroidal Milling reduces the peripheral weight of the rim for great reactivity Dynamic Balance where every point of the rim is counterbalanced by an equal weight on the opposite side Ultra-Fit for easy tyre mounting and improved performance for clincher tyres MOMAG: the external rim profile is free of holes, so the structural integrity of the wheel is increased and there is no need for rim tape Differentiated rim height, 27mm front & 30mm rear for optimized structural integrity and performance Carbon hub with USB bearings, aluminium axle Aerodynamic aluminium spokes with exclusive Mega-G3 spoke pattern Weight: 1449g Tech Specs: Spokes Spoke Count: 16 Front and 21 (G3) Rear RDB - Rim Dynamic Balance Aerodynamic Double-Butted Aluminium spokes Ultraliner / DRSC Geometry Self-Locking Aluminium nipples Rims Profile Height: Differentiated (24/27mm at the front - 27/30mm at the rear Material: Aluminium Rim Section: (Height/width): differentiated/22mm Tyre fitment - Clincher with inner tubes Hubs Carbon and aluminium hub USB bearings Width: 100mm (Front) / 130mm (Rear) Oversize flange Cup-and-cone bearing system Freehub: CA 9/10/11/12x, SH 11x or 9/10x with spacers In The Box: New, re-designed quick-release skewers User Manual Warranty Booklet Campagnolo Wheel Identification Card
Sector GCi Carbon Gravel WheelsetWhether you're racing across the mud or simply exploring the countryside gravel roads, this wheelset is engineered for fast and smooth-rolling performance. It features a hard-wearing unidirectional carbon fibre rim construction, which allows you to benefit from its amazing strength without adding any unnecessary grams to your gravel bike. Engineered to excel in high impact environments, this model is equipped with revolutionary TeXtreme Innegra that's integrated into the layup of the rims. This special fibre delivers 75% high impact resistance when compared to standard carbon rims of the same profile. This means you can enjoy high energy rides with superior vibration damping and none of the harsh stiffness associated with carbon.So what is Innegra?Innegra is a fibre derived from polypropylene that exhibits some highly beneficial properties, including high strength-to-weight ratio, resistance to damage, vibration damping and energy dissipation. The TexTreme fabric used in the layup of GCi rim is a Spread Tow fabric built from a hybrid of Innegra and T700 carbon fibres. The Spread Tow layout is significant because it also contributes some positive attributes - the fibres are straighter (reduced crimp therefore higher strength) and it facilitates the use of less resin (lower weight).In the GCi rim the Spread Tow fabric is used on the outer layer of the rim, giving it the unique checkerboard pattern.Sounds good, but what does that mean for a rim? Significantly more compliance...Under a lab test the GCi rim was 50% more vertically compliant than a unidirectional T700 carbon rim of the same profile. This test involves loading the rim with a 100kg weight, in which the GCi rim exhibited a deflection of 15.74mm compared to 10.55mm on the standard T700 rim.It is widely acknowledged that vertical compliance is important for damage reduction (less likely to crack), a reduction of fatigue and to improve traction. Such an improvement in vertical compliance also brings a radically improved ride quality to the GCi wheelset.The Innegra equipped rims do not have the associated harsh stiffness of regular carbon wheels. Significantly more impact resistance...In the lab the GCi rim was able to handle impacts of almost double the standard required for MTB wheels by the UCI. The GCi rim withstood an impact of 140J compared the UCI stipulated requirement of an 80J impact, making it 75% stronger than the UCI requirements. In real world terms, the GCi rim can handle the equivalent of dropping a 15kg weight from a height of up to 1.08 metres onto the bare rim, thus making it 18% stronger than a recognised leading competitor who has published their data. Much less weight...Despite offering strength and compliance advantages, the use of Innegra also allows the construction of an extremely lightweight rim. The Innegra equipped GCi rim weighs just 440g, and Sector's complete wheelset weighs just 1690g.Features: Rim Material: T-700 Unidirectional Carbon Fibre; Outer layer: TeXtreme Plain Weave Spread Tow Carbon Fibre and Innegra S Hybrid Wheel Size: 700c Use: Gravel Spokes / Type: Pillar 1422 Bladed / Straight Pull Nipples: Pillar Black Brass DSN Hub Rotor Fitment: Centrelock Freehub: 6 Pawl (Shimano or SRAM XD options available to select) Hole Count: 24h ERD: 566mm Rim Width: (Internal) 24mm | (External) 31mm Rim Depth: 38mm Tubeless: Yes Single or Pair: Pair End Caps: (Front) 100x12mm / (Rear) 142x12mm Extras: Tubeless Sealant, valves, tape and 15mm end caps Weight: 1690gBuy Sector Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Token Roubx Carbon Gravel Disc WheelsetCarbon-made for a quality-performance and a consistent roll across the most daring gravel courses, these prime RoubX wheels by Token stay strong and stiff as you shoot for CX and XC silverware. This versatile pairing makes the most of its carbon build to stay low in weight and high in performance as you weave your way to the podium. Giving great balance thanks to the 33mm height and 25.3mm width of each rim, a stable and confident roll is assured on every run. Hard-Riding, Carbon-Made Gravel Wheelset Primed to be ridden hard and heartily, each wheel is strengthened by 24 Pillar Wing spokes and spins with the utmost smoothness thanks to the Premium bearings within the Token D1 hubs. The rear hub features a Shimano 10/11-speed compatible freehub for enhanced power transfer as you take on trickier routes, ensuring a top-level performance en route to the finish line. With a tubeless-ready design adding control and grip when running on lower inflation tyres and disc brake-optimisation adding unrivalled stopping abilities, this wicked-riding wheelset is ideal for the fast-paced and adventurous gravel rider. Features: Material: Carbon Fibre Internal Rim Width: 25.3mm External Rim Width: 31.1mm Rim Height: 33mm Spokes: 24 x Pillar Wing 14g Straight, two-cross lacing (per wheel) Hub Type: D1 Freewheel Compatibility: Shimano 10/11-Speed Bearing Type: Premium Axle Spacing: Front: 12x100mm Thru-Axle; Rear: 12x142mm Thru-Axle (adaptors for QR included) Tyre Type: Clincher Tubeless Ready: Yes Brake Type: Disc Brake Weight: 1568g (combined)Buy Token Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Riders seeking a strong durable and lightweight wheelset for rugged road and gravel adventures will find this 650B/27.5 diameter wheel with wider rims a perfect choice. It makes no compromises on responsiveness durability and ease of use.The lightweight aluminum rims feature ISM4D technology which strategically removes material from the rim where it’s not needed but keeps it around the spokes where tension is applied. Double butted spokes further reduce weight and make the wheel feel more responsive. The spokes have an aero elliptical shape that can save 5 watts of energy while maintaining your speed. Super-wide rims (25mm internal) are compatible with tubeless tires up to 64mm to absorb road shocks and vibrations. You get 5cm of “tire travel” to cushion your ride and the smaller-diameter rims allow you to retain the agile handling you want with a drop-bar bike.Our UST system has been improved with a new rim bed shape that makes it easier than ever to install and change tires. Fore technology attaches the spokes to the rim without the need to drill the upper rim bed so no tape is required. No hassles no added weight. Our new Infinity hub platform optimizes spoke lacing with highly controlled tension for maximum power transfer and the Instant Drive 360 freewheel coupled with our automatic bearing preload adjustment (QRM Auto) provides fast engagement stiffness and added durability. The wheels use center lock brake rotors and are available with Shimano or SRAM XD-Road driver bodies and can convert to Campagnolo with an optional driver body. The front hub is a 12mm thru-axle that can convert to 15mm or quick release. The rear is a 12x142 and can also convert to quick release. Key benefits Traction rolling efficiency and confidence on all types of terrain Wider 650B/27.5 rims let you run larger high-volume tires and still maintain the responsive handling of a normal road bike 5cm of plush “tire travel” improves traction and comfort prevents pinch flats and lets you dial in the perfect tire pressure for the terrain UST Tubeless compatibility for lower rolling resistance Superlight and durable ISM4D rim is only 440g Patented lightweight aero spokes Automatic bearing preload (QRM Auto) requires no adjustment and guarantees long-term durability Fore drilling doesn't require the use of rim tape - 30g saved per wheel Laterally stiff and vertically compliant for a dynamic ride quality Fore technology keeps the rim upper bridge solid to make the rim stiffer 17mm axle and new hub design ID360 freewheel technology is 12mm compatible convertible to quick release (15mm axle option through axle replacement) Rims Material: Maxtal Tire: UST Tubeless and tubetype Disc brake specific profile SUP welding technology Fore tapeless tubeless technology UST tubeless technology Weight reduction: ISM 4D Internal width: 25 mm Hookless profile Height: 22 mm ETRTO size : 584x25TSS Spokes Count: 24 front and rear Nipples: Fore integrated aluminum Material: steel Shape: straight pull elliptical aero double butted (patented) Lacing: front and rear crossed 2 contactless Delivered with User guide UST valve and accessories Multifonction adjustment wrench (delivered with rear wheel) Intended use Recommended tire sizes: 28 to 64 mm (11 to 25) ASTM CATEGORY 2 : road and offroad with jumps less than 15cm For a longer longevity of the wheel Mavic recommends that the total weight supported by the wheels doesn't exceed 120kg bike included Max Pressure: see indication on wheel and tire If they differ use the lowest of the 2 Minimum and maximum allowed tyre width: see indication on wheel Maximum tyre pressure: 41bar/59PSI with a 28mm tyre - 245bar/36PSI with a 64mm tyre Hubs Axle material: aluminum Front and rear bodies: aluminum Instant Drive 360 freewheel technology Rear: Quick Release 12x142 and 12x135 compatible Front: Quick release 12x100 and 15x100 through axle compatible QRM Auto bearing preload technology Infinity hubs Compatibility Freewheel: Shimano/Sram convertible to Campagnolo ED11 N3W and XD-R with optional driver bodies Rear axle: 12mm thru axle convertible to Quick Release with optional adapters and axle replacement Front axle: 12mm thru axle easily convertible to quick release with optional adapters Convertible to 15mm with complete axle replacement Versions Disc standard: Center Lock® only Freewheel: Shimano/Sram or XD-Road Compatible Adapters and freewheel bodies 12 to 9mm front adapter for quick release (V2680301) 15mm axle (V2373501) ID360 Shimano / Sram Light freewheel body (V3850101) ID360 Campagnolo freewheel body (V3440101) ID360 XD-R freewheel body (V2580101) ID360 Shimano / Sram freewheel body (V3430101) 15mm axle (LVXXXXXX) 12 to 9mm rear adapter for quick release (V2510801 (with axle V2373401) ID360 N3W freewheel body (V4270101) Information on specified weight The weight of the wheels is announced at +/-5% in XD/XD-R and Center Lock version without quick release nor valve nor rim tape
Utilising technology from Shimano's higher-tier versions such as Dura-Ace, Ultegra and 105, this superb kit brings you the same top-quality features at an affordable price. Engineered for balanced performance and consistency, this disc brake specific bundle includes everything you need to take your adventures further than ever before. Shimano Tiagra 4700 Crankset The iconic four-arm crank design has a standard pitch circle (bolt circle) diameter of 110mm both chain ring combinations are interchangeable because they fit on the same crankset. Features: Cassette compatibility: 10 speed Bottom Bracket: BB-RS500/BB-RS500-PB Chain Line: 150 Shimano Tiagra 4720 Disc Brake This high-quality road disc brake provides serious entry-level stopping performance and modulation. Giving you intuitive braking control, its lever uses ergonomics inspired by the 105 series to offer greater comfort and actuation in all conditions. Easy to set up, it's equipped with an adjustable reach, so you can customise it to suit your specific hand-size, type of riding and individual preferences. BR-4770 Caliper: Ready for action, this model's caliper offers greater rider control and simple maintenance. It features One Way Bleeding technology which delivers a streamlined oil route throughout the system to prevent air bubbles from being captured. This makes it incredibly easy to bleed for keeping installation and adjustment easy. Features: Use: Road Speed: 2x10 speed Oil: Mineral oil Reach Adjust: Tooled Type: Dual Control Lever Shimano Tiagra 4700 Rear Derailleur The new rear derailleur has a revised cable pitch, which offers precise and long-lasting shifting performance. RD-4700 Features: Small Cage is supplied with 11-28 cassettes Medium cage is supplied with 11-32 cassettes Shimano Tiagra 4700 Front Derailleur (2 x 10 speed) A light action front derailleur with a more ergonomic operation results in less chain drop. A braze on support bolt improves stability. Features: Cassette compatibility: 10 speed Top Gear Teeth: 53T Maximum Capacity: 16T Chainstay Angle: 61-66 Chain Line: 43.5 Shimano HG Cassette Sprocket (10 speed) Quality 10-speed Shimano Tiagra cassette. Features: Sprocket Ration (11-32T): 11-12-14-16-18-20-22-25-28-32 Sprocket Ration (11-28T): 12-13-14-15-17-19-21-23-25-28 (12-28T) Reliable Shimano Ultegra 6701 10 Speed Chain Enjoy the benefits of Shimano's no-compromise attitude; their use the best materials offers a great and reliable performance. Features: Ultegra 6701 10-speed Runs smoothly Efficient Shimano Tiagra 4700 Bottom Bracket Strong and smooth, the Shimano Tiagra 4700 HG500 Bottom Bracket is for use with two-piece cap-free design road chainsets Thread: English Threaded Minimal bearing interface gives superbly smooth rolling Easy installation Weight: 72g (approx) Please note that this groupset does not come supplied with outer cables.
Shimano Tiagra 4720 10 Speed Groupset - DiscThis brilliant groupset is perfect for road use as it sets the benchmark for entry-level components packages. Utilising technology from Shimano's higher-tier versions such as Dura-Ace, Ultegra and 105, this superb kit brings you the same top-quality features at an affordable price. Engineered for balanced performance and consistency, this disc brake specific bundle includes everything you need to take your adventures further than ever before.Shimano Tiagra 4700 CranksetThe iconic four-arm crank design has a standard pitch circle (bolt circle) diameter of 110mm both chain ring combinations are interchangeable because they fit on the same crankset.Features: Cassette compatibility: 10 speed Bottom Bracket: BB-RS500/BB-RS500-PB Chain Line: 150Shimano Tiagra 4720 Disc Brake:This high-quality road disc brake provides serious entry-level stopping performance and modulation. Giving you intuitive braking control, its lever uses ergonomics inspired by the 105 series to offer greater comfort and actuation in all conditions. Easy to set up, it's equipped with an adjustable reach, so you can customise it to suit your specific hand-size, type of riding and individual preferences.BR-4770 Caliper:Ready for action, this model's caliper offers greater rider control and simple maintenance. It features One Way Bleeding technology which delivers a streamlined oil route throughout the system to prevent air bubbles from being captured. This makes it incredibly easy to bleed for keeping installation and adjustment easy.Features: Use: Road Speed: 2x10 speed Oil: Mineral oil Reach Adjust: Tooled Type: Dual Control LeverShimano Tiagra 4700 Rear DerailleurThe rear derailleur has a revised cable pitch, which offers precise and long-lasting shifting performance.RD-4700 Features: Small Cage is supplied with 11-28 cassettes Medium cage is supplied with 11-32 cassettesShimano Tiagra 4700 Front Derailleur (2 x 10 speed)A light action front derailleur with a more ergonomic operation results in less chain drop. A braze on support bolt improves stability.Features: Cassette compatibility: 10 speed Top Gear Teeth: 53T Maximum Capacity: 16T Chainstay Angle: 61-66 Chain Line: 43.5Shimano HG Cassette Sprocket (10 speed)Quality 10-speed Shimano Tiagra cassette.Features: Sprocket Ratio (11-32T): 11-12-14-16-18-20-22-25-28-32 Sprocket Ratio (11-28T): 12-13-14-15-17-19-21-23-25-28 (12-28T) ReliableShimano Ultegra 6701 10 Speed ChainEnjoy the benefits of Shimano's no-compromise attitude; their use the best materials offers a great and reliable performance.Features: Ultegra 6701 10-speed Runs smoothly EfficientShimano Tiagra 4700 Bottom BracketStrong and smooth, the Shimano Tiagra 4700 HG500 Bottom Bracket is for use with two-piece cap-free design road chainsets Thread: English Threaded Minimal bearing interface gives superbly smooth rolling Easy installation Weight: 72g (approx)Please note that this groupset does not come supplied with outer cables.A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Tiagra 4720 10 Speed Groupset - DiscThis brilliant groupset is perfect for road use as it sets the benchmark for entry-level components packages. Utilising technology from Shimano's higher-tier versions such as Dura-Ace, Ultegra and 105, this superb kit brings you the same top-quality features at an affordable price. Engineered for balanced performance and consistency, this disc brake specific bundle includes everything you need to take your adventures further than ever before.Shimano Tiagra 4700 CranksetThe iconic four-arm crank design has a standard pitch circle (bolt circle) diameter of 110mm both chain ring combinations are interchangeable because they fit on the same crankset.Features: Cassette compatibility: 10 speed Bottom Bracket: BB-RS500/BB-RS500-PB Chain Line: 150Shimano Tiagra 4720 Disc Brake:This high-quality road disc brake provides serious entry-level stopping performance and modulation. Giving you intuitive braking control, its lever uses ergonomics inspired by the 105 series to offer greater comfort and actuation in all conditions. Easy to set up, it's equipped with an adjustable reach, so you can customise it to suit your specific hand-size, type of riding and individual preferences.BR-4770 Caliper:Ready for action, this model's caliper offers greater rider control and simple maintenance. It features One Way Bleeding technology which delivers a streamlined oil route throughout the system to prevent air bubbles from being captured. This makes it incredibly easy to bleed for keeping installation and adjustment easy.Features: Use: Road Speed: 2x10 speed Oil: Mineral oil Reach Adjust: Tooled Type: Dual Control LeverShimano Tiagra 4700 Rear DerailleurThe rear derailleur has a revised cable pitch, which offers precise and long-lasting shifting performance.RD-4700 Features: Small Cage is supplied with 11-28 cassettes Medium cage is supplied with 11-32 cassettesShimano Tiagra 4700 Front Derailleur (2 x 10 speed)A light action front derailleur with a more ergonomic operation results in less chain drop. A braze on support bolt improves stability.Features: Cassette compatibility: 10 speed Top Gear Teeth: 53T Maximum Capacity: 16T Chainstay Angle: 61-66 Chain Line: 43.5Shimano HG Cassette Sprocket (10 speed)Quality 10-speed Shimano Tiagra cassette.Features: Sprocket Ratio (11-32T): 11-12-14-16-18-20-22-25-28-32 Sprocket Ratio (11-28T): 12-13-14-15-17-19-21-23-25-28 (12-28T) ReliableShimano Ultegra 6701 10 Speed ChainEnjoy the benefits of Shimano's no-compromise attitude; their use the best materials offers a great and reliable performance.Features: Ultegra 6701 10-speed Runs smoothly EfficientShimano Tiagra 4700 Bottom BracketStrong and smooth, the Shimano Tiagra 4700 HG500 Bottom Bracket is for use with two-piece cap-free design road chainsets Thread: English Threaded Minimal bearing interface gives superbly smooth rolling Easy installation Weight: 72g (approx)Please note that this groupset does not come supplied with outer cables.A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
DT Swiss Arc 1100 Dicut Rear Road Wheel (48mm)This fast-rolling and dependable road wheel is engineered to gives an aerodynamic performance as you tear across the asphalt. The 48mm rim depth on this superb road wheel provides every ride with reliable crosswind stability and minimises drag on speedy, timed races. The carbon construction maintains fantastic stiffness and responsiveness on the most challenging journeys, while the tubeless-ready profile reduces the weight of the wheel for a brilliantly streamlined experience.Features: Rim Material: Carbon Rim Dimensions: Internal Rim Width: 17mm; External Rim Width: 25mm Rim Height: 48mm Spokes: DT AeroLite straightpull with DT ProLock Hidden aluminium nipples, 2-cross lacing Hub Type: DT240 Hub Axle Type: 130x5mm QR Freehub: Ratchet System 36 SL, Shimano 11-speed Tubeless-Ready: Yes Brake Standard: Rim Brake Recommended Maximum Weight: 110kg Includes: Tubeless tape 19mm, IS 6-bolt adapter Road, Swissstop black prince, tubeless valve and refill kit, valve guard, wheel bag Weight: 829gBuy DT Swiss Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Zipp 303 Firecrest Carbon Tubeless Rear WheelEngineered to meet the demands of modern road bike adventures, this rear wheel features a hookless carbon rim construction, which allows it to deliver incredibly fast and smooth rolling performance. Zipp has equipped this model with tubeless tyre compatibility, so you can enjoy the benefits of superior stability and control as well as a lighter overall weight. Another highlight of this version is its disc brake compatibility, which means that you'll benefit from powerful and consistent braking performance during the most unpredictable of road conditions.Zipp's 303 Firecrest Tubeless Disc-brake rear wheel is designed for the real world… a world of imperfect conditions, road surfaces, and elements where the bottom line is simple. Efficiency = speed. It's faster, lighter, and more capable over varied terrain—whether the surface is pavement in all its conditions or no pavement at all. Deeply rooted in Zipp's drive to conquer the Spring Classics, the 303 Firecrest is remade with a purpose-made approach for the demands of modern road bikes. When it comes to going fast on a bicycle, efficiency means reduced: Wind resistance, rolling resistance, rider fatigue, weight. Designed using real-world direct measurements (vs. primarily wind tunnel or computer simulation). The results were huge. Its rim is slightly more bulbous in design than its predecessor, with a 30mm outside width, a 25mm internal width, and a 40mm rim depth. The profile provides low drag and an improved transition between rim and tyre, boosting aero efficiency on the road. The wide rim stance also features less tyre deflection for reduced rolling resistance. The combination of the wider tyre, increased tyre volume, and lower tyre pressure helps to reduce rider fatigue by smoothing out the ride over imperfect pavement and road conditions—the tyre and wheel system absorbs the shaking, not the rider. At the centre of the 303 Firecrest Tubeless Disc brake rear wheel is a versatile and durable hubset, the German-engineered ZR1 DB. This hubset features 66 points of engagement for quicker response. The 303 Firecrest Tubeless Disc-brake rear wheel is for dedicated cyclists who aspire to the latest in technology. Its competitors… in races, against peers, or simply conquering personal limits. This is about becoming faster and matching your motivation to the most advanced technology.Features: Rim Material: Hookless Carbon Tyre Compatibility: Tubeless tyres only Brake Compatibility: Disc (Center Lock) Rim Inside Width: 25mm Rim Profile: Symmetrical Rim Finish: UD fibre, adhesive decals Nipple Material: Aluminium Spoke Type: CX-Ray Spoke Count: 24 Spoke Pattern: 2 Cross Driver Body Type: Multiple options available to select Axle Type: TA 12x142 Bearings: Cartridge - Steel Driver Mechanism: 6 Pawls Leaf Spring Weight: 842g (approx)Technologies: Zipp graphics and cosmetic identity that scream speed Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile Lighter Weight than its predecessor, making it nimble and fast Tubeless Made Easy, optimised tyre bed sign allows for simple tool-free installation and removal with no need for an air compressor to seat the tyre Ultra-wide 25mm rim profile creates a better tyre interface to be fast on or off the road 40mm rim depth makes a light and aero wheel in every situation ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Center locking rotor interface. Lockring is included with the wheels XDR or SRAM/Shimano driver bodies Campagnolo driver body sold separatelyBuy Zipp Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Dura-Ace R9270 C60 Carbon CL Disc WheelThe Dura-Ace R9270 C60 from Shimano features a quality full-carbon 60mm-deep Tubeless Ready rim and a Centre Lock disc rotor mount. This wheel is fast, agile and stable, and it's optimised with Shimano D2 Aerodynamic Rim Profiling - it's the ideal wheel design for time trial, triathlon and criterium events. And the rear wheel is compatible with Shimano HG 11 and 12-Speed cassettes.Perfect for flatter courses and time trials, the Dura-Ace C60 prioritizes aerodynamic efficiency and lateral rigidity. The new hub design, stiffer spokes, and deep-section rim are designed specifically to allow you to push harder in corners and ensure that every bit of your effort is translated into forward motion. Like the entire Dura-Ace wheel family, the new C60 started with a blank slate. Different from the C36 and C50, the C60 has a specific front hub design using Shimano's OPTBAL 2:1 spoke pattern to enhance lateral rigidity. The C60 also receives stiffer spokes, 1.8 mm instead of 1.5 mm. Tested by our professional athletes, this focus on the lateral rigidity of C60 allows you to push harder in corners and when manoeuvring at higher speeds. Lastly, the new wind-tunnel tested, deep-section rims feature a faster, more stable cross-section that time trialists, triathletes, and sprinters alike will enjoy. Centre-Lock Disc Rotor MountThe Centre Lock system makes an easy rotor installation possible with a spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency. D2 Aerodynamic Rim ProfileAerodynamic performance is affected by wind direction. To create the D2 rim, Shimano engineers considered both frontal and crosswinds, aiming to achieve optimal performance in real-world riding conditions. Extensive prototype testing, in the wind tunnel and on the road, proved that a wide rim shape with a deep tire bed performs best across a wide range of conditions. At yaw angles ranging from 0 to 15 degrees, the Shimano D2 rim profile reduces air drag better than others aero shape rims. This rim design also boosts lateral wheel stiffness and offers improved vertical compliance for increased control, comfort and durability on the road. Rear Wheel OPTBAL Spoke SystemThe OPTBAL rear wheel spoke system features 21 spokes—14 on the drive side and 7 on the non-drive side. Cassette spacing in today's wheels produces unbalanced tension in traditional 1:1 spoke systems. This unbalance is intensified with the 11-speed cassette, producing nearly double the tension on the drive side spokes. Generally, high and low tension spokes have respectively tendency toward breaking down and coming loose spoke nipples. Unbalanced tension affects durability and strength. The OPTBAL design rebalances spoke tension, enhancing wheel rigidity and strength for a more durable wheel. Shimano E-Thru Axle SystemThe tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed. Features: Series: Dura-Ace R9200 Series HR: High-Rigidity ver. +20% increased lateral rigidity for powerful riders and sprinters 60 mm height full Carbon rim Internal rim width: 21 mm Disc Brake Mount: Centre Lock Disc D2 Aerodynamic rim profile Axle System: 12 mm E-Thru / Hub Spacing (O.L.D.): Front: 100mm; Rear: 142mm Freehub: Shimano 12-Speed (Compatible only with Shimano road 12-Speed cassette sprockets) Tyre Type: Clincher Tubeless; Recommended Tyre Size: 25-622 - 32-622 Weight: 858g (rear); 751g (front)A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.