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Orbea Carpe 20 2022 - Hybrid Sports Bike
  • £719.00
  • RRP £799.00
  • Saving you £10

SEIZE THE DAY, ANY DAY.You have a style and you know what fits. The Carpe is a part of you. Carpe is lightweight, versatile and comfortable. There is a beauty to the handlebars, the smoothness of a gear change, and the parts working in harmony. You'll like your city streets even more while moving over them on two wheels. Carpe delivers the freedom you've been waiting for. Throw a leg over and enjoy.

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Thule EasyFold XT 934 AcuTight 13-Pin 3-Bike Carrier Tow Bars
  • £719.99
  • RRP £849.99
  • Saving you £15

The Thule EasyFold XT 3 TowballBike Carrier comes fully pre-assembled so no additional tools are required. For security, it  locks the bikes to the rack and also the rack to the car. Easy to handle, store and mount this handy holder is fully foldable and has a high load capacity enabling transport of e-bikes and heavy mountain bikes. Using detachable bike arms with lockable Thule AcuTight torque limiter knobs that "click" when optimal storage torque is reached, mounting is super simple. Adjustable pump buckles with extra-long wheel straps fasten easily to wheels (up to 4.7" wheels) whilst having a large distance between wheel holders enabling the transport of long wheelbase bikes.  The simplicity and intelligent design continue with the smart foot pedal which activates the tilt function of the carrier to provide easy car boot access.  Specifications: Max Number of Bikes: 3 Load Capacity: 60kg Max Bike Weight: 30kg Power Connector: 13-pin Dimensions: 123 x 83 x 68 cm Distance Between Bikes: 22 cm Rear Lights Tilt function Does not fit cars with exterior spare tyre

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FSA Powerbox Powermeter Carbon Road ABS Chainset - 50 x 34 - 175mm
  • £724.99
  • RRP £1149.95
  • Saving you £37

Features: Hollow carbon arms with UD carbon finish 386Evo 30mm AL7050 alloy axle fits every frame (purchase BB separately) AL7075 100% CNC chainrings AL7075 Torx T-30 alloy chainring bolts Fits Shimano and Sram 10-11 speed systems UD carbon finish Weight: 585g Power2max Features simple2use Auto Zero: every time you stop pedalling for 3 seconds or more your power2max re-zeros , no need to re-zero manually. No cadence magnet needed: you don't need to install a cadence magnet on your bike. Your power2max calculates cadence precisely using its internal accelerometer. Batter change: when the time come to change your battery - after 300 to 400 hours of use (6,000 to 12,000km) - you can do it yourself. ±2% Precision Power2max power meters deliver state of the art data: they achieve an accuracy of ±2% or better including all environmental influences. power2max power meters achieves this accuracy through a refined design and high quality manufacturing processes. *Designed, engineered and made in Germany* Power2max manufactures the power meters in Germany with the highest quality production standards. *ANT+* Power2max power meters use the ANT+ standard to transmit data wirelessly to your bike computer. The ANT+ standard guarantees reliable transmission and offers a large number of bike computers to choose from. *Bluetooth ready* Power2max FSA power meters are Bluetooth ready and can be upgraded to transmit the data wirelessly not only with ANT+, but also via Bluetooth communication (with purchase of firmware upgrade). *Upgradeable* Power2max FSA power meters can be upgraded to have the software feature of left-right balance

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Reynolds TR 367S Carbon Boost MTB Wheelset - Black - Microspline}, Black
  • £727.99
  • RRP £1300.00
  • Saving you £44

Reynolds TR 367S Carbon Boost MTB WheelsetFeaturing two high-quality carbon rims, this mountain bike (MTB) wheelset delivers fantastic stiffness and strength when climbing without any unnecessary weight holding you back when roaring down the trails. Reynolds has also equipped this model with an asymmetric rim profile that increases its toughness through more even spoke tension. In addition, its Boost axle spacing means that riders will enjoy more tyre clearance, smoother rolling performance and increased traction wherever their next trail-riding adventure takes them.Tubeless-Ready with Hookless Rim ProfileBenefitting from tubeless-ready technology, this wheelset gives riders the ability to run lower tyre pressures for tubeless advantages such as greater traction on rough terrains, increased stability and fewer chances of flats or punctures. Thanks to its hookless rim profile, it also ensures a no-burp tyre fit and easy inflation, so you can spend less time on maintenance and more time hitting the trails.Sapim CX-Delta Bladed Spokes and Reynolds TR6 HubsThe Reynolds Trail Rated line of wheels offers a wide variety of mountain wheel options for all types of riding and wheel sizes. From Lightweight race wheels built for speedy ascents to wider rims designed for thrashing rocks with rubber, all of Reynolds wheels are designed to enhance the ride quality of today's wide variety of modern mountain bikes. Stepping up from the TR line, the TRs wheels offer bladed spokes for an ideal blend of vertical rigidity and lateral compliance. The Reynolds TR6 hub provides five degrees of engagement at the freehub for quicker power transfer to the drivetrain. The TRs line of wheels also come with a five-colour decal kit, so you can customise the look of your wheels.- Asymmetric rim profile provides a stronger wheel through more even spoke tension- 5 colour match decals included with wheels- Reynolds TR6 Mountain hub (100% CNC machined) with quick, 5 degrees of engagement- Tubeless-ready, hookless rim profile for a no-burp tyre fit and ease of inflation- Utilizes Sapim CX-Delta spokes which offer the same weight as CX-Ray spokes and alloy nipples- Lifetime warrantyFeatures: Rim Material: Asymmetric, hookless Carbon Axle Size: Front: 15x110mm; Rear: 12x148mm, Boost Use: MTB Rim Width: Inner: 36mm; Outer: 42mm Rim Depth: 26mm Tubeless Ready: Yes, tubeless-ready, hookless rim profile Freehub Type: Shimano Micro Spline Spoke Type: Sapim CX-Delta Bladed Spoke Count: Front: 28; Rear: 28 Spoke Pattern: Front: 3x; Rear: 3x Hub: Front: Reynolds Hub TR6; Rear: Reynolds Hub TR6 Nipple: External Alloy Engagement: 5° Pawl: 6 Decal: Grey vinyl Brake Compatibility: Centre Lock disc brake Included: 2x45mm Tubeless Valve Stems, End Caps (15mm FT/12x142mm RR installed), Decal Kits (5 Colours), 22mm Tubeless Tape installed and Reynolds Owner's Manual Wheel Size: 27.5" Single or Pair: Pair Weight: 1725g (pair)Manufacturer's Part Number: R-WC-79732 Black 27.5" Micro SplineBuy Reynolds Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Reynolds TR 367 Carbon Boost E-MTB Wheelset - Black - Microspline}, Black
  • £727.99
  • RRP £1300.00
  • Saving you £44

Reynolds TR 367 Carbon Boost E-MTB WheelsetThis electric mountain bike (E-MTB) wheelset features a carbon fibre rim construction, which delivers exceptional stiffness, strength and an overall lower weight on your ride. Thanks to its asymmetric rim profile, this model also ensures a stronger wheel through more even spoke tension. This means that you'll benefit from its fantastic toughness and stability when climbing and when it's time to descend down the trail, you won't have to worry about any excess grams holding you back. Coming equipped with high-quality Sapim E-Lite spokes, Boost axle-spacing and a Reynolds TRE hub, this wheelset is engineered to handle the increased speeds and torque levels that are associated with electric mountain bike riding.Carbon E-MTB Wheelset with Reynolds TRE HubsThe TRE series is designed specifically for the demands of the more refined generation of e-mountain bikes, which allow you to cover steeper terrain in a shorter time, allowing grinders to go further faster. Since more miles mean greater wear, Reynolds built its robust TRs rims to an e-bike specific hub using 32 e-bike specific spokes and brass nipples. The result is a lightweight wheel for riders demanding top performance from their new machines.- Asymmetric rim profile provides a stronger wheel through more even spoke tension- Built with Sapim E-Lite spokes which use 2.3mm spoke head and durable brass nipples- Reynolds TRE hub- 6 pawl, full inline engagement for ultimate drive mechanism durability- 10 degrees of engagement- Short steel pawls and reinforced ratchet ring area provide greater durability and strong engagement- 5 bearing rear hub design (3 bearings in freehub) help to disperse the increased load from e-bike motor- Chromoly steel axle and freehub body for increased durability- Reinforced IS-6 disc mount for increased durability- Cooling fins behind brake mount for heat dissipation- Available in Boost onlyFeatures: Rim Material: Asymmetric Carbon Fibre Axle Size: 15x110mm; Rear: 12x148mm, Boost Use: E-MTB Rim Width: Inner: 36mm; Outer: 42mm Rim Depth: 26mm Freehub Type: Multiple options available to select separately Spoke Type: Sapim E-Lite JB Spoke Count: Front: 32; Rear: 32 Spoke Pattern: Front: 3x; Rear: 3x Hub: Front: Reynolds Hub TRe; Rear: Reynolds Hub TRe Nipple: External Brass Engagement: 10° Pawl: 6 Decal: Blue/Yellow vinyl Brake Compatibility: 6-bolt disc brake Included: 2x45mm Tubeless Valve Stems, End Caps (15mm FT/12x142mm RR installed), 30mm Tubeless Tape installed and Reynolds Owner's Manual Wheel Size: 27.5" Single or Pair: Pair Weight: 2150g (pair)Manufacturer's Part Number: R-WC-79991 Black 27.5" Shimano Micro Spline R-WC-78921 Black 27.5" ShimanoBuy Reynolds Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Vision TC 55 Disc Carbon Clincher Road Wheelset
  • £729.00
  • RRP £949.95
  • Saving you £23

Vision TC 55 is the newest range of light and versatile carbon racing wheels, with a 55mm rim depth in disc brake format. They have been developed using extensive wind tunnel testing and on the road with professional cyclists of our sponsored teams, offering a great balance of performance and light weight at a competitive price.Full Carbon 55mm depth rim,Tubeless ready - clincher,Centerlock rotor mount,6 sealed cartridge bearings (2F + 4R),J-Bend spokes 24F / 24R,TA-12 and X-12,Artisan built, entirely by hand,Includes rim tape (clincher), spoke protector.FREEHUBAlloy freehub,Shimano 10-11sp,SRAM XDR.ADAPTERSFront - QR and TA-15 (available separately),Rear - QR (available separately).

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DT Swiss Arc 1400 Dicut Rear Road Wheel (62mm) - Carbon - 130mm Shimano, Carbon
  • £729.99
  • RRP £1089.99
  • Saving you £33

DT Swiss Arc 1400 Dicut 62mm Rear WheelDesigned for fast-paced road cycling, this rear wheel uses its deep carbon rim and aero-centric hub to keep you rolling with power and speed on every outing. The carbon rim and its 62mm depth, means that you'll enjoy its superb stability through the toughest of terrain conditions. The 17mm internal width of the rim also ensures an agile and well-balanced performance as you break away from the pack or take on climbs. The tubeless-ready profile also minimises the overall weight for a more streamlined experience.Features: Rim Material: Carbon Rim Dimensions: Internal Rim Width: 17mm; External Rim Width: 27mm; Rim Height: 62mm Spokes: DT Aero Comp straightpull with DT ProLock Hidden aluminium nipples, 2-cross lacing Hub Type: DT240 Hub Axle Type: 100x5mm QR Freehub: Ratchet System 18, Shimano 11-speed Tubeless-Ready: Yes Brake Standard: Rim Brake Recommended Maximum Weight: 100kg Includes: RWS Steel, Tubeless tape 19mm, TL Vent aluminium black 49-65mm, Swissstop black prince, valve guardBuy DT Swiss Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Zipp 404 Firecrest Carbon Tubeless Disc Brake Rear Wheel - Shimano/SRAM
  • £729.99
  • RRP £865.00
  • Saving you £16

Zipp’s 404 Firecrest Tubeless Disc-brake is the icon of speed with three decades of use. The 404’s heritage as Zipp’s icon of speed extends back decades, and its future is even brighter. At 58mm deep, the 404 Firecrest Tubeless is ideal for road races, time trial and triathlon, and gran fondos. The wheelset’s 23mm internal width is perfect for running wider tubeless tires at reduced air pressure. That is a vital component of Total System Efficiency, or TSE, an approach to speed on ever-changing roads and riding conditions. Specifically, TSE focuses on overcoming specific barriers to speed: wind resistance, gravity, rolling resistance, and vibration losses. Zipp’s ABLC Sawtooth Technology uses an intricate dimpling pattern to improve aero efficiency. Zipp’s use of hookless (straight side) rims in the 404 Firecrest is integral to Making You Faster. With hookless, the transition between the tire and the rim is more seamless and aero. Zipp’s hookless rims have more efficient resin distribution, which means lighter, stronger wheels. Outdoor testing commissioned by Zipp revealed the real-world gains of Zipp TSE. A bike- and-rider system weighing 85kg (187lbs) on the new 404 Firecrest with 25mm tires required 286 watts to maintain a speed of 40kph. That’s a 4-watt savings compared with the previous model 404 Firecrest. At the center of the 404 Firecrest Tubeless Disc-brake is a versatile and durable hubset, the German-engineered ZR1 DB. If you had to choose just one wheel for road riding and racing, the 404 Firecrest Tubeless Disc brake is a savvy and speedy choice. Technology: Total System Efficiency ABLC Dimples Features: Versatile race wheelset for the modern road race bike with tubeless and hookless rim profile Optimized tire bed for easy tire installation Wide 23mm rim profile creates a better tire interface to be fast on or off the road New ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Ships with 12mm front and rear end caps Center locking rotor interface. Lockring is included with the wheels XDR or SRAM/Shimano driver bodies Campagnolo driver body sold separately The 404 Firecrest Tubeless Disc-brake is about 370 grams lighter than its predecessor 1450g wheelset* Front 660g Rear 790g Lifetime Warranty *Lightest configuration: 12mm through axles and XDR body. No tape or valve included in weight

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Zipp 303 Firecrest Carbon Tubeless Disc Brake Rear Wheel - Shimano/SRAM
  • £729.99
  • RRP £915.00
  • Saving you £20

Zipp’s 303 Firecrest® Tubeless Disc-brake wheelset 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 new 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. The 303 Firecrest Tubeless Disc-brake was 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 32mm outside width, a 25mm internal width, and a 40mm rim depth. The profile provides low drag and an improved transition between rim and tire, boosting aero efficiency on the road. The wide rim stance also features less tire deflection for reduced rolling resistance. The combination of the wider tire, increased tire volume, and lower tire pressure helps to reduce rider fatigue by smoothing out the ride over imperfect pavement and road conditions—the tire and wheel system absorbs the shaking, not the rider. At the center of the 303 Firecrest Tubeless Disc brake is a versatile and durable new hubset, the German-engineered ZR1 DB. This hubset features 66 points of engagement for quicker response. The 303 Firecrest Tubeless Disc-brake wheelset 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: New 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, optimized tire bed sign allows for simple tool-free installation and removal with no need for an air compressor to seat the tire. Ultra-wide 25mm rim profile creates a better tire interface to be fast on or off the road New 40mm rim depth makes a light and aero wheel in every situation New ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Ships with 12mm front and rear end caps Center locking rotor interface. Lockring is included with the wheels XDR™ or SRAM/Shimano driver bodies Campagnolo driver body sold separately

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Zipp 303 Firecrest Carbon Tubeless Disc Rear Wheel Back Wheels
  • £739.99
  • RRP £915.99
  • Saving you £19

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. Item Top Features Continued: 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 (select option separately) - Campagnolo driver body sold separately

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Shimano Dura-Ace R9270 C50 Carbon CL Disc Wheel - Black - Front}, Black
  • £739.99

Shimano Dura-Ace R9270 C50 Carbon CL Disc WheelThe Dura-Ace R9270 C50 Carbon CL Disc Wheel is Tubeless Ready and features an aerodynamic 50mm-deep-section full carbon rim. Designed and engineered to provide exceptional speed, agility and style, this quality carbon race wheel offers the perfect balance of aerodynamics and crosswind stability at a low weight. And it has a Centre Lock rotor mount for use with disc brakes and the rear wheel is compatible with Shimano HG 11 and 12-Speed cassettes.The all-rounder of the new Dura-Ace wheel line-up, the C50 is both lighter than the previous C40 model and nearly as aerodynamic as the previous C60. It's a wheelset at home in a wide range of conditions. From time trials to criteriums, on rolling terrain or attempting a personal best, the new C50 is the ideal wheel for spirited road riding.The perfect blend of low weight and aerodynamic performance, the all-new Dura-Ace C50 features an updated all-carbon tubeless rim and new hub design that drops weight while enhancing rigidity. 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 All-round tubeless wheels with balanced aerodynamics and lightweight materials 50mm height Full Carbon Rim Internal Rim Width: 21mm Disc Brake Mount: Centre Lock Disc D2 Aerodynamic rim profile Axle System: 12mm 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: 787g (rear); 674g (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.

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Shimano Dura-Ace R9270 C60 Carbon CL Disc Wheel - Black - Front}, Black
  • £739.99

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.

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