The HollowTech II 12-speed Dura-Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite riders Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, and improve strength The teeth have been developed to work only in conjunction with the 12-speed chains for improved contact providing more efficiency and improved power transfer There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability
Although the crank arms and spider arms are noticeably bigger, which increases stiffness, the overall weight has dropped by 7g over the previous edition of Dura-Ace. The crankset has been adapted to work with disc brake road bikes that generally have 135mm rear hub spacing and shorter chainstays without the need to increase Q-factor thanks to its wider chainring spacing. The Compact version offered here features a 50.34T chainring profile to offer an excellent rider tuned gear combination for varied conditions from flats to high mountains. Please note: Bottom bracket is NOT included.
Shimano Dura-Ace R9100 Compact 11 Speed ChainsetThe Dura-Ace R9100 chainset is the highest level of cranks produced within the Shimano road product range. Designed to be light weight and stiff, this compact chainset comes with a 50-34t chainring setup ensuring you have a wide range ratio for climbing and descending.The Shimano Dura-Ace R9100 Compact Chainset has been completely re-designed to offer the very best combination of light weight and stiffness. It features Shimano's iconic 4-arm hollow spider that is made from hollow-forged aluminium.Although the crank arms and spider arms are noticeably bigger, which increases stiffness, the overall weight has dropped by 7g over the previous edition of Dura-Ace.The chainset has been adapted to work with disc brake road bikes that generally have 135mm rear hub spacing and shorter chainstay without the need to increase Q-factor thanks to its wider chainring spacing.The Compact version offered here features a 50/34T chainring profile to offer an excellent rider tuned gear combination for varied conditions from flats to high mountains.Please note: Bottom bracket is NOT included.Features: Enhanced design saves 7g while maintaining rigidity Iconic 4-arm construction maintains high rigidity and reduces weight Optimised crank arm design strengthens key stress zones Chainring tooth profile is adapted for race bike specific disc brake systems Accommodates shorter chainstay (410mm) with 135mm/142mm rear hub spacing Hollowglide chainring construction maintains smooth shifting whilst reducing weight and increasing stiffness Axle Diameter: 24mm Bottom Bracket Included: No Weight: 609g (50/34T)Manufacturer Reference Codes:Black 110mm 50/34T 170mm: FCR9100C04 Black 110mm 50/34T 172.5mm: FCR9100D04 Black 110mm 50/34T 175mm: FCR9100E04Black 110mm 50/34T 165mm: FCR9100A04A 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.
Triathlon. Time Trial. Cyclocross. Some disciplines are made for 1x. And while our X-Range™ 2x set up has integrated much of the simplicity of a 1x system, there are still times when a single ring is best. The SRAM RED® 1 crankset offers the most demanding racers the right mix of features—aerodynamics, durability and simplicity. Single-ring drivetrain simplifies functionality and reduces weight 48 and 50t variants feature direct mount aero chainrings for better aerodynamics Non-aero chainrings can be installed with a single tool, making gearing changes a breeze SRAM X-SYNC™ wide-tooth, narrow-tooth chainring technology provides maximum chain control Laser-etched chainring finish is more durable DUB™ bottom bracket adds durability, simplicity and broad compatibility Can be upgraded to a power meter
Triathlon. Time Trial. Cyclocross. Some disciplines are made for 1x. And while our X-Range™ 2x set up has integrated much of the simplicity of a 1x system, there are still times when a single ring is best. The SRAM RED® 1 crankset offers the most demanding racers the right mix of features—aerodynamics, durability and simplicity. Single-ring drivetrain simplifies functionality and reduces weight 48 and 50t variants feature direct mount aero chainrings for better aerodynamics Non-aero chainrings can be installed with a single tool, making gearing changes a breeze SRAM X-SYNC™ wide-tooth, narrow-tooth chainring technology provides maximum chain control Laser-etched chainring finish is more durable DUB™ bottom bracket adds durability, simplicity and broad compatibility Can be upgraded to a power meter
Whether you're training for an event or wanting to achieve personal performance goals, this powermeter spider is designed for precise and reliable results using proven SRAM technologies. Ready for training, it features a hard-wearing aluminium construction for extra toughness and durability on your road bike. SRAM has also put this model through a CNC-machining process to shave off any excess material, while still maintaining its strength. As a result, riders will enjoy its smooth and dependable performance without any weight penalty. With power readings that are accurate within +/-1.5% and aren't affected by climate conditions during a ride, this is a great choice of upgrade for taking your training sessions up a level. AXS Enabled Powermeter Spider AXS is SRAM’s bike component integration system that connects electronic bicycle components and software. The SRAM AXS app allows riders to see battery status, change component behavior, personalise controls, get maintenance reminders, and update firmware. Bluetooth and ANT+ Compatible Your riding and training efforts deserve power measurement that reaches the highest standards of accuracy to help you reach personal records. Because without accurate data, you can’t know if you are making the progress you’re aiming for. With SRAM's power measurement technology that uses Bluetooth Low Energy and ANT+ connectivity, you’ll have the technology to get real results. 200 hours of Ride Time You are working hard, pushing yourself to new heights in some of the toughest conditions. Ride with confidence knowing that your power meter will not quit when you need it the most. Enjoy up to 200 hours of ride time in any weather conditions with its IPX7 waterproof rating and 10k temperature compensation; if harsh climates do not hold you back, then you need a product capable of rising to the occasion. That is exactly what the SRAM AXS Powermeter Spider is made for. Train harder, ride faster and unlock your ultimate potential. Please note: This product includes the SRAM AXS Powermeter Spider only. Cranksets and chainrings are available separately. Technologies: - AXS™ enabled for easy monitoring and firmware upgrades. - Bluetooth Low Energy and ANT+ compatible. - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride. - Uses a common CR2032 battery that lasts for 200 riding hours and changes without tools. - Power-upgrade compatible with the following RED® and Force eTap AXS™ cranksets: RED 1x: 36T-46T, Force 1x: 36T-46T, Force 2x: 33/46, 35/48. Manufacturer's Part Number: PMQS8229000 Grey 107 BCD
Simple to use 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 dont need to install a cadence magnet on your bike. Your power2max calculates cadence precisely using its internal accelerometer. Battery 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. 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
Already a legend in its time, the SRAM Red Exogram Crankset is now available with refreshed graphics to complement the new SRAM Red eTap componentry. The SRAM Red Exogram crankset features a completely hollow construction all the way to the spider. It's hidden bolt pattern makes better use of carbon fibre to further improve stiffness and shed weight. As always for seamless, flawless performance and Yaw compatibility, the chainset has been equipped with X-GlideR chainrings. The chainrings are designed for an optimised shifting performance with the Yaw front derailleur. The stiffer rings (5mm 7075-T6 aluminium CNC-machined) feature upshift rivets with an advanced design adopted from SRAM XX. CNC machining allows for precision control of each tooth shape, ramp, and nearly every shifting feature of the chainring. Chainrings, chain, and front derailleur are designed as a single integrated system for optimised performance.Arm Material: CarbonChainring Material: AluminiumBottom Bracket: BB30 (Not Included)Weight: 609g
The HollowTech II 12-speed Dura-Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite riders Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, and improve strength The teeth have been developed to work only in conjunction with the 12-speed chains for improved contact providing more efficiency and improved power transfer There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability
The HollowTech II 12-speed Dura-Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite riders Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, and improve strength The teeth have been developed to work only in conjunction with the 12-speed chains for improved contact providing more efficiency and improved power transfer There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability
The HollowTech II 12-speed Dura-Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite riders Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, and improve strength The teeth have been developed to work only in conjunction with the 12-speed chains for improved contact providing more efficiency and improved power transfer There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability
The HollowTech II 12-speed Dura-Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite riders Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, and improve strength The teeth have been developed to work only in conjunction with the 12-speed chains for improved contact providing more efficiency and improved power transfer There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability