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Shimano M4100 Deore 10 Speed Cassette - Silver - 11-42t}, Silver
  • £31.99
  • RRP £49.99
  • Saving you £36

Shimano M4100 Deore 10 Speed CassetteReady for shredding the MTB trails, this 10 speed cassette delivers smooth and light performance from its minimal design sprocket carrier. Its three largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigidity. Shimano has also equipped this model with Hyperglide sprockets that have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load. Its close ratio gearing also allows a more efficient use of energy through finer cadence control.Features: Carrier Material: Alloy Use: MTB Speed: 10 speed Compatibile Chain: 10 speed HG-X MTB chains Sprockets: HyperglideTooth Count: 11-46T or 11-42T options available separatelyPart Numbers: 11-46T: CSM4100146; 11-42T:CSM4100142Technologies: Alloy Carrier: The 3 largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigidity. Hyperglide Sprockets: Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load. Sprockets are cut away and drilled to reduce weight without reducing rigidity. Close Ratio: Close ratio gearing allows a more efficient use of energy through finer cadence control.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 DI2 Cable Set - Black - DI2}, Black
  • £79.99
  • RRP £149.99
  • Saving you £47

Shimano Dura-Ace DI2 Cable SetThis externally routed Shimano Dura-Ace Di2 Cable Set is ideal for upgrading your current bike to Dura-Ace Di2 if it does not feature the Di2 specific internal cable routing. To ensure that the signal goes from the shifter to the derailleurs, the reliability of the electric cable has been proven by repeated field tests in various riding conditions, including extreme temperatures, rain,mud, and cobble stone roads.The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts. Dura-Ace Di2 requires 2 cables: a handlebar cable set to connect the shifters to a battery indicator junction box or FlightDeck, and the other to connect the handlebar cable to the battery and derailleurs.Features: Full E-Tube type Shimano Di2 cable kit For use with non-Di2 specific frames Cable ties and guides includes to route wires neatly along your bike's frame Compatibility: Road and mountain bike (MTB) E-Tube type Shimano Di2 electronic drivetrain componentsA 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 MT600 2x11 XT-SLX Mix Groupset - Black - 11-42t, Black
  • £199.99
  • RRP £399.99
  • Saving you £50

Shimano MT600 2x11 XT/SLX Mix GroupsetDelivering slick shifts and a wide gear range, this versatile groupset is prepared for the toughest mountain bike (MTB) trails. The chainset, shifters and front derailleur are SLX and the rear derailleur is the XT model.Shimano SLX MT600 Boost ChainsetWith improved driving efficiency, the SLX M600 Boost chainset has an Optimised gear combination and gear ratio for trail riding and a smooth-shifting rhythm to maintain speed and acceleration throughout the trail. The abrasion-resistant driving gear teeth ensure efficient power transfer and you'll enjoy stable shifting performance in any suspension position. The Rigid 2-piece 4-arm (70º) crank combines with the Rigid composite chainrings to make the most of every pedal rotation.Please note: This "Boost" type chainset is only suitable for use on bikes that have "Boost" 12x148mm rear hub spacing. To ensure the correct chainline, please only install this chainset on bikes with "Boost" rear spacing.Shimano SLX M7000 Front Derailleur E-TypeThe redesigned SLX M7000 brings trickle down technology from Shimano's higher tier XT and XTR groups. It features improved side swing cable pull routing that provides a drastic reduction in shift effort while also increasing tyre clearance. This increased tyre clearance allows for shorter chainstays; designed with long-travel bikes in mind.Please note: This Front derailleur is only compatible with frames that have Shimano E-Type front derailleur mounting points.Shimano XT M8000 Long Cage Rear Derailleur (Direct Mount)The Shimano Deore XT rear derailleur provides accurate shifting for tackling all the challenges of a long day in the mountains. This superb model gives you more space around your rear dropout resulting in easier rear wheel removal when required. It also delivers light shift operation with 20% less effort, so you can enjoy a more precise and smoother gearing experience while out on in the mountains. What's most impressive is it's easier to adjust with greater chain stability and more efficient shifting, allowing you to navigate across the toughest trails with ease.Please note: Direct mount only, this version does not come with a B2 link. Bolt not included.Shimano SLX 2x11-Speed ShiftersTough, aggressive and lightweight, the Dyna-Sys11 SLX Rapidfire shift levers have Vivid indexing and 2-way release function. Light to the touch but positive and crisp, Vivid indexing provides a constant amount of shift lever force.A 2-way release allows shifting from various riding positions; the upper lever still performs the same shift function, but it can now swing in either direction allowing it to be released by the thumb or index finger.The Pod design allows the use of these shifters with any brake I-spec-II lever. Removable optical gear display with integrated cover allows the use of these shifters with any brake lever.Shimano SLX M7000 CassetteThe SLX M7000 11-Speed cassette featuring light weight minimal design sprocket carrier. Its Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load. Close ratio gearing allows a more efficient use of energy through finer cadence control. Plus, its sprockets are cut away and drilled to reduce weight without reducing rigidity.Shimano HG601 ChainThis is a super narrow and lightweight 11-speed HG-EV symmetrical design chain that offers smooth shifting and maximum durability.Chain Features: Outer plate design has been developed to reduce the chance of chain suck Sil-Tec surface treatment technology (PTFE plating) on inner links that is smooth running and increases durability Inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity and near silent runningShimano Deore MT500 Pressfit Bottom BracketSame as the same as SM-BB52 model, the Shimano Deore MT500-PA has better sealing and rotation to deliver high driving efficiency.Groupset Features: Chainset: Shimano SLX MT600 36.26t, 3mm Chainline Front Derailleur: Shimano SLX M7000 SLX E-Type Rear Derailleur: Shimano XT M8000 XT Long Cage (Direct Mount) Front Shifter: Shimano SLX M7000 2/3 speed incl 1800mm inner cable Rear Shifter: Shimano SLX M7000 11 speed incl 1800mm inner cable Cassette: Shimano SLX M7000, 11-42T Chain: Shimano HG601 114 link Bottom Bracket: Shimano MT500-PA PressfitA 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 9000 Road Brake Cable Set - High-tech Grey, High-tech Grey
  • £45.99

Shimano Dura-Ace 9000 Road Brake Cable SetSpecially designed for Dura-Ace 9000 road bike brake levers but compatible with the entire Shimano road lever range, this complete brake cable kit will get your brakes working like new again. It comes with front and rear-specific inner and outer cables, plus all the required fittings. So, after installation, you'll be getting the best possible performance from your brakes.Features: Includes 2x1.6mm Polymer coated inner cables (1 x 2000mm, 1 x 1000mm), and 2x SLR outer casings for a complete bike (1 x 1800mm, 1 x 800mm), and all end caps Polymer coated stainless steel inner cable leaves a smooth surface for low friction and reduced sliding resistance providing a lighter quicker braking operation Outer casing is lubricated internally along its length with low-friction silicone grease to reduce cable friction SLR casing uses a special spiral wound construction that is axially stiff yet can be bent around handlebar curves The outer casing is lined with a hard polymer sheath to keep its round shape to assist with the smooth operation of the inner cable Manufacturer's Part Number: Y8YZ98010A 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 9000 Road Brake Cable Set - Black, Black
  • £39.99

Shimano Dura-Ace 9000 Road Brake Cable SetSpecially designed for Dura-Ace 9000 road bike brake levers but compatible with the entire Shimano road lever range, this complete brake cable kit will get your brakes working like new again. It comes with front and rear-specific inner and outer cables, plus all the required fittings. So, after installation, you'll be getting the best possible performance from your brakes.Features: Includes 2x1.6mm Polymer coated inner cables (1 x 2000mm, 1 x 1000mm), and 2x SLR outer casings for a complete bike (1 x 1800mm, 1 x 800mm), and all end caps Polymer coated stainless steel inner cable leaves a smooth surface for low friction and reduced sliding resistance providing a lighter quicker braking operation Outer casing is lubricated internally along its length with low-friction silicone grease to reduce cable friction SLR casing uses a special spiral wound construction that is axially stiff yet can be bent around handlebar curves The outer casing is lined with a hard polymer sheath to keep its round shape to assist with the smooth operation of the inner cable Manufacturer's Part Number: Y8YZ98010A 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 Tourney HG200 7 Speed Cassette - Black - 12-32t}, Black
  • £13.99
  • RRP £29.99
  • Saving you £53

Shimano Tourney HG200 7 Speed CassetteRepresenting exceptional value for money, the Shimano Tourney HG200 7 Speed Cassette is a solid and reliable option with a wide range of gears for great versatility. Featuring Hyperglide technology, this versatile and durable bike cassette guides the chain into the sprocket smoothly and precisely on every ride.Features: Speed: 7-Speed Compatibility: Shimano 7-Speed rear derailleurs Chain Compatibility: Super Narrow HG 7-Speed Rear Hub Compatibility: Shimano HyperGlide (HG) type freehubs Use: Mountain Bike, Touring bike, Hybrid bike Tooth Ratios: 12-14-16-18-21-26-32TA 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 105 R7100 12 Speed Double Chainset - Black - 50.34t}, Black
  • £149.99
  • RRP £169.99
  • Saving you £12

Shimano FC-R7100 105 12 Speed Double ChainsetEngineered for the best combination of durability, rigidity and low weight performance, this 12 speed chainset is ideal for pairing up with the rest of the Shimano 105 Di2 groupset. Featuring a hollow aluminium crankarms with an anodised finish, it delivers extra protection against wear and corrosion as you conquer every mile on your road bike. Another benefit is the resin ribs on the back of this model's chainrings, which use Shimano 105's unique structural design to achieve further weight savings and crisp shifting performance.Hollowtech II TechnologyProviding the best balance of stiffness, strength, weight and rotating performance, the concept of Hollowtech II technology is focused on producing a superior crankset that will maximise your power transfer. The rigidity of the crankset ensures pedalling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances where you need to pedal more. Moreover, the Hollowtech II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.Hollowglide TechnologyThis model features Hollowglide technology on its outer chainring. High rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and quicker and more precise front shifting.Shimano 105 Di2 brings electronic wireless shifting to a new set of riders. For those who have only experienced mechanical shifting and ergonomics, Shimano 105 Di2 represents a transformation of the road cycling experience.Features: Crankarm Material: Hollow Aluminium with an Anodised finish Use: Road Speed: 12 speed Spider/Gear Arms: 4 Q-Factor: 148mm Chainline: 44.5mm PCD: 110mm Compatible Chain: HG 12 speed Bottom Bracket Included: No, available separately Recommended Press Fit BB: SM-BB72-41B Recommended Threaded BB: SM-BBR60 Technology: Hollowtech II, HollowglideTechnologies: - Optimal balance of stiffness, strength, weight and rotational performance. - Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting.Manufacturer's Part Numbers: FCR7100A04 Black 12 Speed 165mm FCR7100C04 Black 12 Speed 170mm FCR7100D04 Black 12 Speed 172.5mm FCR7100E04 Black 12 Speed 175mmA 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 RS520 12 Speed Double Chainset - Black - 50.34t}, Black
  • £124.99

Shimano FC-RS520 12 Speed Double ChainsetReady for wherever your next road journey takes you, this 12 speed chainset is part of Shimano's revolutionary R7100 series. Coming fully equipped for long days on the road, it features a two-piece crank design that uses an integrated 24mm bottom bracket and 2x12 speed 50-34T chainrings. Another benefit is its four-arm construction and compatibility with modern disc brake road frames, making it simple to integrate into your drivetrain setup for a performance upgrade.Features: Use: Road Speed: 12 speed Q-Factor: 150mm Chainline: 44.5mm PCD: 110mm Compatible Chain: HG 12 speed Tooth Count: 50/34T Number of Chainrings: 2 Recommended Bottom Bracket: Pressfit: BB-RS500-PB; Threaded: BB-RS501Technologies: - Affordable and high-end style crankset. - 4-arm crankset for 12 speed drivetrain. - Compatible with frames of O.L.D. 135mm and 410mm chainstay length. - 2-piece crankset. - Integrated crank arm and bottom bracket. - Increased rigidity with less weight. - Wider bearing positioning. - Rigidity is enhanced and pedalling force is efficiently transmitted. - Precision Bearings. - Low maintenance and simplified installation.Manufacturer's Part Numbers: 165mm: FCRS520A04 170mm: FCRS520C04 172.5mm: FCRS520D04 175mm: FCRS520E04A 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 105 R7100 12 Speed Cassette - Black - 11-34t}, Black
  • £64.99
  • RRP £69.99
  • Saving you £7

Shimano CS-R7100 105 12 Speed CassetteWith tough steel cogs and an aluminium spider, this road bike cassette is designed for maximum durability and performance on every mile. Part of Shimano's pioneering R7100 series, this 12 speed model also comes equipped with an 11-34T ratio, making it perfect for everything from sprinting on the flat to climbing steep inclines on your road bike. Its refined 12-step gear combination also ensures excellent efficiency, so none of your effort is wasted. You'll experience faster, smoother shifts under maximum torque (pedalling force) and shifts so smooth you'll barely notice them, whether you're biking uphill, downhill or rolling on the flats. Compatible with both Shimano 11 and 12 speed freehub bodies, this cassette is a versatile choice of upgrade for conquering your next road journey.12 Speed Cassette with Hyperglide TechnologyThe distinctively designed Hyperglide sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for the mountain bike (MTB) 10 speed system, underwent comprehensive optimisation to achieve super-highly efficient shifting for road cycling.Features: Cogs Material: Steel Spider Material: Aluminium Speed: 12 Speed Chain Compatibility: HG 12 speed Freehub Compatibility: Shimano 11 and 12 speed freehub bodies Tooth Count: 11-34T Tooth Combination: 11-12-13-14-15-17-19-21-24-27-30-34T Weight: 361gManufacturer's Part Numbers: CSR710012134 Black 12 SpeedA 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 HG710 12 Speed Cassette - Black - 11-36t}, Black
  • £84.99

Shimano CS-HG710 12 Speed CassetteReady for day long adventures on your drop handlebar road bike, this 12 speed cassette features a wide 11-36T range of 327% for excellent efficiency, so none of your effort is wasted. Whether you're sprinting on the flats to steep climbs, you can benefit from its wider gear ratio that's tailored to suit every road situation. Another highlight is each of its gear steps are optimised for pedalling efficiency, with the first eight cogs focusing on a natural and comfortable connection, and the largest four cogs allowing you to select from a wide range of gears while avoiding abrupt gear ratio changes. Compatible with both Shimano 11 and 12 speed freehub bodies, this cassette is a versatile choice of upgrade for conquering your next road adventure.12 Speed Cassette with Hyperglide TechnologyThe distinctively designed Hyperglide sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for the mountain bike (MTB) 10 speed system, underwent comprehensive optimisation to achieve super-highly efficient shifting for road cycling.Features: Cogs Material: Steel Spider Material: Aluminium Use: Road Speed: 12 speed Combination: 11-36T Compatible Chain: HG 12 speed Series: Shimano 105 R7100 Di2 SeriesManufacturer's Part Numbers: CSHG71012136A 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 105 R7000 Road Groupset - Pressfit - Black - 11-30t, Black
  • £499.99
  • RRP £599.99
  • Saving you £17

Shimano 105 R7020 Road GroupsetEnhanced with the same advanced technologies as seen on Shimano’s Dura-Ace and Ultegra models, this rim brake version of the updated 105 11 speed groupset will instantly improve your road riding experience. It’s an ideal choice when building a custom road bike or upgrading your bike’s tired components.The outstanding ergonomics and technologies of the 105 R7020 Road Groupset from Shimano makes your rides unforgettable. This slick perfoming groupset is ready for long hard days in the saddle and is packed with some of the finest Shimano components around.(Please Note: The brakes within this groupset are set up to European standards with the left-hand lever operating the front brake and the right-hand lever operating the rear brake. For UK customers and other parts of the World, you will need to disconnect the brake hoses and swap them over.)Included: 2x Shimano ST-R7020 Levers (gear and brake cables included) 2x Shimano 105 R7000 Rim Brake Calipers 1x Shimano FC-R7000 Chainset, 50/34T 1x Shimano FD-R7000-L Front Derailleur (Braze-on type, downswing 1x Shimano RD-R7000 Rear Derailleur 1x Shimano R7000 11-Speed Cassette, 11-30T (Shimano 9-11-Speed freehub compatibility) 1x KMC X11 11-Speed chain 1x Shimano BB-SM-BB72-41 Pressfit Bottom Bracket Includes all Shimano SP41 outer cables, brake inner cables and gear cablesShimano 105 R7020 Levers Including Flat Mount CalipersThese superb 11 speed shifters offer great ergonomics trickled-down from the Ultegra range, so you can shift to the right gear at the right time while maintaining your momentum. They offer excellent reach adjustment and a redesigned internal shifting unit for simple and effective operation. Additionally, you'll benefit from greater rider control in all conditions plus intuitive and quick shifting operation. Furthermore, these offer the same light shifting operation as top tier systems thanks to trickle-down technology.Features: Material: Resin and Steel Shifter Type: Dual Control lever Speed: 11-Speed Use: Road Hose Joint: Straight Included: Shimano RT70 brake rotors (140mm and 160mm) Brakes come fully assembled and pre-bled ready for installation Weight: 610g (pair)Shimano FC-R7000 ChainsetThis smooth crankset balances weight and efficiency without sacrificing stiffness, so you can maintain the edge over your competitors. Furthermore, its rider-tuned performance with numerous gear combinations means you'll be able to climb and descend with ease. Its wider gear pitch increases chain clearance with small gearings and allows for 410mm chainstays. You'll benefit from optimum power transfer and great frame compatibility for fast and precise pedal stroke performance.Features: Chainline: 43.5mm Technology: Hollowtech II Gear Arm: 4-arm BCD: 110mm Speed: 11-Speed Q Factor: 146mm Included: Shimano BB-R60 Bottom BracketShimano FD-R7000 Front DerailleurThis top-quality front derailleur features a natural stroke feeling and a wind-cutting ergonomic power curve, allowing you to comfortably shift. Its integrated cable tension adjustment and shorter rear centre (410mm) allows for accurate and simple front mech adjustment. You'll benefit from lighter front shifting operation and its optimised cage design for rim brake road bikes.Features: Action: Down Swing Chainline: 43.5mm Chain Stay Angle: 61-66° Link Bushings: 7 Mount: Braze-On Speed: 2x11-Speed Top Gear Teeth: 46-53T Total Capacity: 16T Weight: 95g (approx)Shimano RD-R7000 Rear DerailleurThis direct-mount 11 speed compatible rear mech features a high-quality Shimano Shadow RD spring for secure shifting performance and wide compatibility. It's intended for rowdier riding styles and it's super low profile design carries many benefits. Furthermore, its low profile and single tension construction mean the rear mech doesn't hit the chainstay in rough riding conditions allowing for smooth and silent performance.Features: Fluoric Coated Link Bushings: 2 Low Sprocket Max: 34T Low Sprocket Min: 30T Max Front Difference: 16T Speed: 11-Speed Spring Type: Shimano Shadow RD Top Sprocket Max: 12T Top Sprocket Min: 11T Total Capacity: 39T Weight: 232g (approx)Shimano R7000 11 Speed CassetteThis fast and reliable 11 speed cassette is ideal for getting you up to speed in a flash thanks to its top-performance rider tuned gearing. Its sprockets make shifting easier than before with their precise profile spacing which offers a flawless and instant experience, making it ideal for keeping the edge over any competition. It's perfect for both club riding and racing.Features: Material: Sprockets: Steel, Nickel Plated; Spider: Aluminium Type: HG-EV Speed: 11-Speed Spider Arm: 1 Lightweight Rider tuned gearing High performanceKMC X11 11 Speed ChainThis high performance 11 speed chain is specifically designed for the demands of modern road cycling. This model uses its half nickel-plated outer plates to ensure smooth and dependable performance. KMC has also developed this version for extreme durability.Features: Use: Road, Mountain Bike (MTB) Speed: 11-Speed Size: 1/2" x 11/128" Pin Length: 5.5mm Quick Link Included: Yes Number of Links: 120 Hi-Performance Half Nickel plated Extremely durable Weight: 266gBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano XT M8100 MTB Crankset - Black, Black
  • £154.99

Shimano XT M8100 MTB CranksetThis high-quality XT crankset is engineered for off-road use as it features hollow forged alloy crank construction which maximises its power transfer while keeping its weight reduced. Packed with some of the finest Shimano technologies around, this lightweight and rigid model is the perfect solution for dominating your way around the trails.Features: Material: Alloy Use: MTB Mount: Direct Mount Speed: 12 speed only Number of Chainrings: Not Included Arm: New Shimano centrelock Chainline: 52mm Q Factor: 172mm Recommended Bottom Bracket: BB-MT800 (Thread Type); BB-MT800-PA (Pressfit) Compatible Chain: HG 12 speedTechnologies: Dynamic Chain Engagement+: Dynamic Chain Engagement+ is a special gear teeth profile designed for use in single-chainring configurations for XC, enduro, and trail riding. It gives more chain retention and smoother pedalling - even over bumpy terrain. Chain retention of any gear will reduce abrasion and worn out. Hollowtech II: Providing the best balance of stiffness, strength, weight and rotating performance. The concept of Hollowtech II technology is focused on producing a superior crankset which will maximise a rider's power transfer. The rigidity of the crankset ensures pedalling efficiency while its weight, a key element of the crankset, you want light, 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. Hollowtech technology is an ultra-lightweight hollow crankarm created by Shimano with the company's own proprietary forging technology that also maintains rigidity. 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. The Hollowtech II crankset has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design. Moreover, Hollowtech II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.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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