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Shimano Ultegra R8100-P Power Meter Chainset - 170mm - 52/36
  • £864.49
  • RRP £999.99
  • Saving you £14

The HollowTech II 12-speed Ultegra chainset with integrated power meter offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders Accurately calibrated strain gauges are integrated inside the crank arm, this provides a stable measurement system through rotation from both sides for extremely precise data +/-2% accuracy of strain gauge measured power Bluetooth and ANT+ with wireless firmware update and data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system HollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load The chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transfer Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight Wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mm A wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplines HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability(sold separately)

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FSA Powerbox Carbon Road ABS Chainset Power Meter Chainsets
  • £795.99
  • RRP £1099.95
  • Saving you £28

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. 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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Stages Cycling Power Meter G3 Dura-Ace R9100 LR Power Meter Chainsets
  • £784.99
  • RRP £964.99
  • Saving you £19

Building on what it learned with its Gen 2 Version, Stages has developed its technology even further for this latest model. Built on to a Shimano Dura-Ace R9100 crankset, it measures the power output of each of the rider's legs and the crankset is individually calibrated to ensure its accuracy. Stages produce power meters that both avid amateurs and professionals at the top of their game can trust. Reliable Readings In All Conditions To ensure consistency of measurement, Stages introduced a world-first feature to its power meters. This feature is called “Active temperature Compensation” and it is built in as standard to account for sudden temperature changes, which if not accounted for, would result in false and inaccurate data. Stable Connection Stages have made additional improvements to the Bluetooth and ANT+ transmitters and the accelerometer. This ensures a stable and powerful connection with your cycle computer is maintained and a faster sampling rate for more up-to-date feedback on your performance.

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Shimano Ultegra R8100-P Power Meter Chainset - 175mm - 50/34
  • £777.99
  • RRP £999.99
  • Saving you £22

The HollowTech II 12-speed Ultegra chainset with integrated power meter offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders Accurately calibrated strain gauges are integrated inside the crank arm, this provides a stable measurement system through rotation from both sides for extremely precise data +/-2% accuracy of strain gauge measured power Bluetooth and ANT+ with wireless firmware update and data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system HollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load The chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transfer Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight Wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mm A wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplines HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability(sold separately)

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Quarq DZERO Road Power Meter Chainset - Black - 52.36t}, Black
  • £754.99

Quarq DZERO Road Power Meter ChainsetFeaturing two high-quality carbon crankarms, this powermeter offers exceptional stiffness, strength and low weight performance on your road bike. Quarq has also equipped this model with two SRAM X-Glide aluminium chainrings for additional durability and precision as you clock up the miles. Designed for compatibility with most 10 speed and 11 speed drivetrains, this powermeter is fitted with a Quarq DZERO DUB spider power meter that delivers accuracy within 1.5%, measuring both legs. Another highlight is it comes complete with many of Quarq's renowned technologies such as MagicZero, AxCad and OmniCal as well as 10K Temperature Compensation and an IPX7 waterproof rating for accuracy and consistency in any weather conditions. DZERO Road Powermeter with X-Glide ChainringsImagine being able to shift smoothly at any time, no matter what. We're talking full-power shifts. Up, down, whatever the road demands. The benefit of X-Glide chainrings is simple, yet, when you think about it, incredibly impactful to the way you ride. Flawless shifting means you'll never again compromise your speed and power in unpredictable road conditions. Quarq precisely paired the different-sized chainrings and redesigned where and how the chain engages with the rings. By aligning the chainring pick-up rivets to the chain pivot pin—rather than the middle of the chain link—you get double the shift opportunities. No more missed shifts, ever. X-Glide puts you in the right gear, right now.Bluetooth and ANT+ CompatibleYour 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 Quarq's premier DZero power measurement technology that uses Bluetooth and ANT+ connectivity, you'll have the technology to get real results.Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DZero DUB Power Meter is paired with the Quarq DUB Crankarms and SRAM's X-Glide 52/36t chainrings to have the perfect fit for most 10- or 11- speed groupsets. A SRAM DUB Bottom Bracket will be required for installation (available separately).Features: Crank Arm Material: Carbon Chainring Material: Aluminium Use: Road Power Meter Type: Spider BCD: 110 Speed: 11 speed Tooth Count: 52/36T Number of Chainrings: 2 BB Spindle Interface: DUB BB Compatibility: All SRAM Road DUB bottom brackets Bottom Bracket Included: No, available separately Guard: No guard Connectivity: Bluetooth or ANT+ Battery: CR2032 Battery Life: 200-hour battery life, change without tools Waterproof Rating: IPX7 Accuracy: Within 1.5%, measuring both legsTechnologies: DUB: The relationship between bottom bracket spindle and bearing is the core of DUB technology. It's where stiffness meets durability. Quarq took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It's this approach to developing a complete system that equals better drivetrain performance. DZERO: Quarq's next-generation DZero power meter platform is named for the D0 Experiment, one of science's most accurate and innovative projects to detect subatomic particles moving at the speed of light. Connectivity: Bluetooth low energy technology and ANT+ wireless data transfer. MagicZero: Automatically checks and recalibrates your power meter as you ride - no need to manually calibrate. AxCad: No cadence magnet required. Battery: CR2032, 200-hour battery life, change without tools. OmniCal: Swap chainrings without affecting accuracy. Accuracy: Within 1.5%, measuring both legs. 10K Temperature Compensation. IPX7 waterproof rating.Manufacturer's Part Numbers: 00.3018.291.170 Black 52/36T 170mm 00.3018.291.172 Black 52/36T 172.5mm 00.3018.291.175 Black 52/36T 175mmBuy Quarq Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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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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Campagnolo Super Record Ultra Torque 12Sp Chainset - Carbon - 53.39t}, Carbon
  • £694.99
  • RRP £864.99
  • Saving you £20

Campagnolo Super Record Ultra Torque 12Sp ChainsetA super-lightweight and high-quality chainset, engineered to take your riding to the next level.Amazingly Light and Robust Road chainsetThe Super Record UltraTorque chainset (12Sp) from Campagnolo has been specially designed with the thrill-seekers in mind for a faster and more stable shifting experience when out on the road. Made from carbon fibre which is not only ultra-lightweight but also ultra-tough for years of long-lasting use.Equipped with the Ultra-Torque bracket system with a titanium axle which allows you to transfer all your pedalling power directly into the drivetrain for a faster gliding experience. By using ceramic Cult bearings, you'll notice how impressively smooth rolling your bike becomes when out on the road. The newly designed outer chainring guarantees a faster, quieter derailing experience thanks to the contoured pin while the symmetrical design of the inner chainring teeth proves more enhanced stability and control during chain crossovers.The Campagnolo Super Record UltraTorque chainset (12Sp) is the perfect choice for keeping you at the top of your game, whether you're competing or cycling for leisure.Features: Material: Carbon Fibre Length: 165; 170; 172.5; 175mm Combinations 39/53 - 36/52 - 34/50 Ultra-Torque bracket system with a titanium axle Aerodynamic super design Ceramic Cult bearings Unchanged Q Factor (145.5) Symmetrical inner chainring teeth Optimised design for every chainring combination. Ceramic Cult bearings Weight 0.618kg Buy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Campagnolo Super Record Ultra Torque 12Sp Chainset - Carbon - 52.36t}, Carbon
  • £686.99
  • RRP £864.99
  • Saving you £21

Campagnolo Super Record Ultra Torque 12Sp ChainsetA super-lightweight and high-quality chainset, engineered to take your riding to the next level.Amazingly Light and Robust Road chainsetThe Super Record UltraTorque chainset (12Sp) from Campagnolo has been specially designed with the thrill-seekers in mind for a faster and more stable shifting experience when out on the road. Made from carbon fibre which is not only ultra-lightweight but also ultra-tough for years of long-lasting use.Equipped with the Ultra-Torque bracket system with a titanium axle which allows you to transfer all your pedalling power directly into the drivetrain for a faster gliding experience. By using ceramic Cult bearings, you'll notice how impressively smooth rolling your bike becomes when out on the road. The newly designed outer chainring guarantees a faster, quieter derailing experience thanks to the contoured pin while the symmetrical design of the inner chainring teeth proves more enhanced stability and control during chain crossovers.The Campagnolo Super Record UltraTorque chainset (12Sp) is the perfect choice for keeping you at the top of your game, whether you're competing or cycling for leisure.Features: Material: Carbon Fibre Length: 165; 170; 172.5; 175mm Combinations 39/53 - 36/52 - 34/50 Ultra-Torque bracket system with a titanium axle Aerodynamic super design Ceramic Cult bearings Unchanged Q Factor (145.5) Symmetrical inner chainring teeth Optimised design for every chainring combination. Ceramic Cult bearings Weight 0.618kg Buy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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4iiii Precision Pro Ultegra R8000 Power Meter Power Meter Chainsets
  • £674.99
  • RRP £689.00
  • Saving you £2

Whether you're training for an event or wanting to beat your previous goals, the Precision Pro is the ultimate component for the job. This dual-sided model (comes with both crank arms, left crank arm has strain gauges built-in) provides readings with an accuracy of within +/- 1% and can be used with your Shimano Ultegra R8000 drivetrain. 4iiii has built on what it learned when producing their left-side model (exceptional accuracy, lightweight design, ANT+ and Bluetooth compatibility, 3D power meter technology), by developing the technology even further for increased precision of the readings. This model is assembled within Shimano's stunning Ultegra R8000 crankset and measures the individual power output of each leg. ANT+ and Bluetooth connectivity allow you to wirelessly connect to it using your smartphone and a wide variety of devices. Accurate and consistent, its smartphone app also gives you access to the rider compensation scale and other useful features such as a battery status indicator. The app also allows you to enjoy over-the-air upgrade capabilities such as adding new features and updates. What's most impressive is its battery life lasts 100+ hours on a 2032 coin cell battery, so you'll benefit from precise and reliable data for longer than ever before. Lightweight and compact, this is a perfect choice of upgrade for riders who want to take their road cycling to the next level.  

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Campagnolo Super Record Ultra Torque 11Sp Chainset - Black - 50.34t}, Black
  • £666.65
  • RRP £811.99
  • Saving you £18

Campagnolo Super Record Ultra Torque 11Sp ChainsetThe completely redesigned chainset represents increased rigidity as well as fresh and cutting edge aesthetics. The new version uses a 4 arm spider design which makes for one single crankarm for all chainring options thanks to its unified bolt pattern. Gone are the days of having a dedicated bolt pattern for standard chainrings and another for compact rings. No longer will changing from traditional to compact, or vice versa, translate into the obligatory purchase of a completely new chainset. The new bolt pattern allows for all 3 chainring standards 53/39, 52/36 and 50/34 to be built upon the same chainset. Changing between compact and standard is now as easy as changing 8 bolts and two chainrings. While the new 4-arm bolt pattern makes for a much more practical design that offers the cyclist a more versatile component, the Campy Tech Lab was dedicated primarily on increasing performance characteristics.The new design incorporates a 8 bolt pattern with a spider arm design that not only holds the chainring in place by way of the bolt but also supports the chainring and in doing so, increases system rigidity. In addition to completely redesigning the spider, Campagnolo engineers dedicated a great deal of energy towards a completely new crankarm that is a great deal stiffer than previous versions. Add this new highly rigid crankarm to the new four-arm spider design and you have a complete chainset that not only excels at transferring power more than any previous version but one that is also more versatile with respect to gearing.Features:Hollow left hand arm Titanium hollow axle Titanium axle bolt CULT bearingsBCD: Inner: 112mm; Outer:145mmBuy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Campagnolo Super Record Ultra Torque 11 Speed Chainset Chainsets
  • £666.49
  • RRP £811.99
  • Saving you £18

Campagnolo wins Red Dot Award 2015 The Super Record EPS 2015 electronic groupset has won the prestigious reddot Award: Best of the Best

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Campagnolo Super Record UT TI Carbon 12 Speed Chainset - 50-34T - 172.5mm
  • £665.99
  • RRP £864.99
  • Saving you £23

The NEW Super Record chainset has a more aerodynamic design than the previous version, with the carbon spider stretching all the way up to the chain ring, creating a cleaner more aesthetically pleasing design. The hollow carbon construction offers a low weight without sacrificing stiffness or reliability. The chainring bolt design has also changed from four to eight, which enhances the chainsets stiffness further. The chainset is available in four sizes and three chaining combinations. Features & Benefits: NEW and advanced carbon layup Unidirectional carbon finish Hollow carbon construction Improved 4 arm spider design, Optimized bcd 8 bolt design locates bolts in perfect position for each chainring Titanium hollow axle Titanium axle bolt CULT bearing Differing number and location of pins and shifting zones according to chainring combination, Ensures optimum location of shift zones during pedal stroke Weight: 618g (172.5 34/50)

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