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Shimano Ultegra R8100 Chainset - 160mm - 52/36
  • £299.99

The HollowTech II 12-speed Ultegra chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders 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)

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Shimano ST-R8170 Ultegra Di2 STI Shift / Brake Lever - Front Shift / Rear Brake
  • £299.99
  • RRP £349.99
  • Saving you £14

Road riding has never been this much fun. That's because the redesigned Ultegra ST-R8170 Dual Control Levers have all-new ergonomics, even more precise brake modulation, and wireless electronic shifting. This trifecta lets you focus on the next sprint, the next descent, or the next joke from your riding partner.Shimano's new Ultegra ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven Servo Wave technology. The all-new Di2 platform, used on both Dura-Ace and Ultegra, untethers the shifters while delivering our fastest, most reliable wireless shifting. Your time on the bike is precious, let Shimano make it even better.High performance Ultegra Wireless hydraulic Servo Wave disc brake Di2 STI's give you control, modulation and power with minimal effort in all riding conditionsWireless connectivity to the front and rear derailleurs for effortless trouble free gear shiftsWith Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gearFull and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear mech will automatically correct to the appropriate ratioSimply pressing tactile buttons allows effortless and comfortable shifting even when your hands are coldDrop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STIHydraulic brake lever with Servo Wave provides excellent stopping power with less effort especially from the hood positionHydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wearFinely tuneable reach adjusters for the levers enable custom fitment for all handsLevers use CR1632 batteries which last for approximately 1.5-2 years

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Shimano ST-R8170 Ultegra Di2 STI Shift / Brake Lever - Rear Shift / Front Brake
  • £299.99
  • RRP £349.99
  • Saving you £14

Road riding has never been this much fun. That's because the redesigned Ultegra ST-R8170 Dual Control Levers have all-new ergonomics, even more precise brake modulation, and wireless electronic shifting. This trifecta lets you focus on the next sprint, the next descent, or the next joke from your riding partner.Shimano's new Ultegra ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven Servo Wave technology. The all-new Di2 platform, used on both Dura-Ace and Ultegra, untethers the shifters while delivering our fastest, most reliable wireless shifting. Your time on the bike is precious, let Shimano make it even better.High performance Ultegra Wireless hydraulic Servo Wave disc brake Di2 STI's give you control, modulation and power with minimal effort in all riding conditionsWireless connectivity to the front and rear derailleurs for effortless trouble free gear shiftsWith Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gearFull and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear mech will automatically correct to the appropriate ratioSimply pressing tactile buttons allows effortless and comfortable shifting even when your hands are coldDrop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STIHydraulic brake lever with Servo Wave provides excellent stopping power with less effort especially from the hood positionHydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wearFinely tuneable reach adjusters for the levers enable custom fitment for all handsLevers use CR1632 batteries which last for approximately 1.5-2 years

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Shimano Ultegra R8150 Di2 12 Speed Shifter Set - Black - Pair}, Black
  • £299.99
  • RRP £399.99
  • Saving you £25

Shimano Ultegra R8150 Di2 12 Speed Shifter SetThe Ultegra R8150 Di2 12 Speed Shifter Set from Shimano is a pair of dual control brake/shift levers that are compatible with Shimano Di2 electronic drivetrain systems and SLR-EV dual position caliper rim brakes. Engineered to ensure precise and easy action gear shifting and outstanding all-weather braking performance, this lever-set is optimised for fast racing, long rides and competitive events.Among the greatest performing Dual Control Levers on the market, Ultegra R8150 Di2 offers 12-speed shifting with refined ergonomics and is exceptionally lightweight. Ultegra R8150 Di2 Dual Control Levers are the ultimate in reliable performance thanks to a Di2 electronic wired gear connection and lightweight rim brakes. Refined ergonomics and advanced materials show the racing pedigree of these levers. Shimano E-TubeE-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. Shimano DCL Dual Control LeverDCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is as critical to higher standard performance as the added gearing. The shift internals borrows the robustness from Shimano's MTB technology and is so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration and simply has to be experienced to be understood. SLR-EV Caliper CompatibleSLR-EV is Shimano's SLR braking technology with a dual symmetric pivot brake caliper. The short-arm brake design employs two bearings and a roller to realize greater efficiency in the pivot area and deliver superior modulation and power for braking. Together with the BC-9000 brake cable, the latest calipers deliver 36% more braking power than Shimano's previous brake model. Features: Quick and intuitive shifting Series: Ultegra R8100 Series Drivetrain: Shimano Di2 Electronic Speeds: 12-Speed Type: Caliper Rim Brake Clearly defined click feeling with the ergonomic shift lever Better bike control and confidence in race conditions Hood shape and texture optimize grip and brake power transmission Weight: 295g (pair)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 GRX 810 Left Hand Gravel Disc Brake - Black - Left Hand}, Black
  • £299.99

Shimano GRX 810 Left Hand Gravel Disc BrakeThis tough lever is specifically designed for riding on rough roads, gravel and mud as it gives you superior braking proficiency. Shimano has installed an anti-slip brake lever on this model, so you can enjoy smooth and reliable stopping power in any weather or terrain conditions. For riders who want to take their rough road cycling further than ever before and across mixed terrain conditions, this is an ideal choice of upgrade. Adjustable Gravel Brake LeverFeaturing some of the finest Shimano technologies, this stunning example allows you to benefit from an overall more enjoyable riding experience. Its Servo Wave Action technology delivers fast braking efficiency between your pads and rotor, so you can enjoy more rapid braking power and control. What's most impressive, is this model also features reach adjust technology which allows you to precisely customise its feel to suit your hand size, riding style and individual rider preferences. Features:   Use: Gravel, Road   Reach Adjust: Tooled Servo Wave Action  Anti-slip lever  Greater mixed terrain control  Technologies: Servo Wave Action: When you pull a Servo Wave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control.Reach Adjust: Its brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.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 R9250 Di2 12 Sp Fr Derailleur - Black}
  • £299.99
  • RRP £399.99
  • Saving you £25

Shimano Dura-Ace R9250 Di2 12 Sp Fr DerailleurThe Dura-Ace R9250 Di2 Front Derailleur from Shimano is a small, durable, smooth shifting, and is compatible with Shimano 12-Speed Di2 electronic drivetrain systems. Ideal for the demands of competitive road racing, this Dura-Ace model ensures ultra-fast, precise and dependable gear shifting performance in all conditions.Despite its smaller, lighter design, the Dura-Ace FD-R9250 brings the fastest shifting front derailleur on the market. The fastest just got faster thanks to the Dura-Ace FD-R9250. Tipping the scales under 100 grams, the new design shifts 45% quicker than Shimano's FD-R9150, already the fastest on the market. And the frontal area of the FD-R9250 is also reduced to decrease aerodynamic drag. Shimano Di2 Electronic Drivetrain PerformanceThanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world's best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future. Shimano E-Tube CompatibleE-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. HYPERGLIDE+ OptimisedHYPERGLIDE+ dedicated chain technology delivers greater chain retention, improved shifting efficiency, and smoother transmission over rough terrain. Improved chain retention encourages more aggressive all-terrain riding and relieves chain-issue anxiety. Smoother drivetrain transmission and enhanced shifting performance sharpens riders' concentration and improves acceleration. Better chain engagement cuts abrasion, reduces maintenance, and lengthens the lifespan of the chain. Features: Fastest ever front shifting, 45% faster than Dura-Ace FD-R9150 Series: Dura-Ace R9200 Series Drivetrain: Shimano Di2 Electronic Speeds: 12-Speed Shimano Groupset Smaller, sleeker, lighter Frontal area reduced by 33% Weight cut to 96g Top gear teeth capacity: 50-55T Weight: 96gA 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 M6100 Deore 12Sp MTB Drivetrain Groupset - Black - 10-51t, Black
  • £299.99
  • RRP £319.99
  • Saving you £6

Shimano M6100 Deore 12Sp MTB Drivetrain GroupsetEnjoy smooth and reliable shifting control with this 12 speed MTB Drivetrain Groupset from Shimano. Made for mountain bike (MTB) riders, this set gives riders the ultimate set for tackling whatever challenges you meet on the trail. Equipped with a durable Chainset, Rear Mech, Shifter, Cassette, and Chain, you can enjoy a smooth and dependable drivetrain performance.Groupset Includes:Shimano Deore FCM6100E2 ChainsetShimano Deore RDM6100SGS Rear MechShimano Deore SLM6100R ShifterShimano Deore CSM6100051 CassetteShimano Deore CNM6100126Q ChainFeatures:Use: MTBSpeed: 1x12 speedTooth Profile: Narrow/WideCrank Mount: Direct mountCassette Ratio: 10-51 Teeth (T)Freehub Compatibility: MicrosplineChainring Size: 32TCrank Mount: Direct mountBottom Bracket: Not includedTechnology: Dynamic Chain Engagement technology, Shimano Shadow RD+, Rapidfire Plus, Two Way Release, HyperGlide+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 GRX 810 Left Hand Disc Brake Brake Levers
  • £299.99

Ready to take on any road cycling challenge, this model is packed with some of the finest Shimano technologies available to bring you an unrivalled riding experience. Precisely customise its feel thanks to its reach adjust technology which allows you to adjust it to suit your hand size, riding style and individual rider preferences. Furthermore, its Servo Wave Action technology delivers fast braking efficiency between your pads and rotor, so you can enjoy more rapid braking power and control.  Taking its lightweight and sleek design up a notch, Shimano has also installed an anti-slip lever which gives you superior grip and control in any weather conditions. Smooth and reliable, this is a perfect example for taking your rough road cycling further than ever before across mixed terrain conditions.   Technologies: Servo Wave Action: When you pull a Servo Wave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control. Reach Adjust: Its brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.

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Shimano Ultegra R8100 12 Speed Chainset Chainsets
  • £299.99

Shimano's Ultegra FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, Ultegra cranks now cater to smaller riders, triathletes, and cyclists curious about shorter crank arms. An integral part of Shimano's new 12-Speed road lineup, the FC-R8100 crank builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-Speed shifting, the Ultegra crank is now offered in lengths from 160 to 175 mm, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanical requirements. Hollowglide Chainring Technology Hollow technology on the outer chainring. The Hollowglide construction ensures high rigidity while its hollow structure cuts down on weight yet maintains strength. This provides better power transfer and quicker and more precise front shifting performance. Hollowtech II Forged Crank Arms A lightweight crankset not only reduces the bike’s weight but decreases rotating mass to aid in acceleration. The challenge is to reduce the weight of the crank without reducing its strength and rigidity. Shimano's advanced forging technology has solved the problem through the HOLLOWTECH crank. Just like high-quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight. Optimised Balance of Stiffness, Strength and Weight The concept of Hollowtech II technology is focused on producing a superior crankset that will maximize a rider’s power transfer. The rigidity of the crankset ensures pedalling efficiency while its low weight, a key element of the crankset, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer.

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Shimano Ultegra R8150 Di2 12 Speed Shifter Set Brake Levers
  • £299.99
  • RRP £399.99
  • Saving you £25

Among the greatest performing Dual Control Levers on the market, Ultegra R8150 Di2 offers 12-speed shifting with refined ergonomics and is exceptionally lightweight. Ultegra R8150 Di2 Dual Control Levers are the ultimate in reliable performance thanks to a Di2 electronic wired gear connection and lightweight rim brakes. Refined ergonomics and advanced materials show the racing pedigree of these levers. Shimano E-Tube E-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. Shimano DCL Dual Control Lever DCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is as critical to higher standard performance as the added gearing. The shift internals borrows the robustness from Shimano's MTB technology and is so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration and simply has to be experienced to be understood. SLR-EV Caliper Compatible SLR-EV is Shimano's SLR braking technology with a dual symmetric pivot brake caliper. The short-arm brake design employs two bearings and a roller to realize greater efficiency in the pivot area and deliver superior modulation and power for braking. Together with the BC-9000 brake cable, the latest calipers deliver 36% more braking power than Shimano's previous brake model.

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Shimano Dura-Ace R9250 Di2 12 Speed Front Derailleur Front Derailleurs
  • £299.99
  • RRP £399.99
  • Saving you £25

Despite its smaller, lighter design, the Dura-Ace FD-R9250 brings the fastest front shifting on the market. The fastest just got faster thanks to the Dura-Ace FD-R9250. Tipping the scales under 100 grams, the new design shifts 45% quicker than Shimano's FD-R9150, already the fastest on the market. And the frontal area of the FD-R9250 is also reduced to decrease aerodynamic drag. Shimano Di2 Electronic Drivetrain Performance Thanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world's best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future. Shimano E-Tube Compatible E-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. HYPERGLIDE+ Optimised HYPERGLIDE+ dedicated chain technology delivers greater chain retention, improved shifting efficiency, and smoother transmission over rough terrain. Improved chain retention encourages more aggressive all-terrain riding and relieves chain-issue anxiety. Smoother drivetrain transmission and enhanced shifting performance sharpens riders’ concentration and improves acceleration. Better chain engagement cuts abrasion, reduces maintenance, and lengthens the lifespan of the chain.

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Pro-Lite Revo GX Gravel Wheelset - Black-White - Shimano/SRAM}, Black-White
  • £299.99
  • RRP £340.00
  • Saving you £12

Pro-Lite Revo GX Gravel WheelsetThe Revo GX provides the reliability, rolling performance, responsiveness and low weight required for successful gravel racing. Combining the strengths and durability of a MTB wheelset and the rolling prowess of the unique road Revo wheels, this design rolls with race-winning authority over any terrain. Spinning on high-quality Japanese EZO bearings and featuring a tubeless-ready, extra-wide rim, it's prepared for any challenge off-road riding can present.Features: Material: Rim: 6061 Alloy; Hub/Freehub: Alloy; Spokes: Sandvik Stainless Steel; Nipples: Brass Rim Width: 23mm Spoke Type: 2.0 straight, rounded Spoke Lacing: 3-Cross Bearings: Japanese EZO Freehub: Shimano 10, 11 Speed Hub Spacing: Front: 100mm; Rear: 135/142mm Weight: 1.8 kgBuy Pro-Lite Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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