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Shimano Ultegra R8000 Double 11-Speed STI Shift Levers
  • £296.99
  • RRP £329.99
  • Saving you £10

The new Shimano Ultegra R8000 shift levers offer powerful braking and effortless 11-speed shifting,making them the ideal choice for both enthusiasts and competitive riders.The shifters feature a redesigned internal shifting unit that reduces resistance and makes the transition from one gear to the next a seamless experience, even when put under loads.Weighing 440 grams per pair the shifters feature an adjustable reach and have been ergonomically redesigned for improved ergonomic comfort in your hand, so you can benefit from better all-around usability.2x11 SpeedCarbon leversRedesigned internal shifting unitGreater reach rangeWeight: 220g (Per Shifter)

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4iiii Precision 3 Power Meter - Ultegra R8000 - 175mm
  • £299.49
  • RRP £375.00
  • Saving you £20

The 4iiii Precision 3 Power Meter has a number of positive things going for it: it boasts an industry-leading 800-hour battery life, an industry-leading +/-1% accuracy, and an industry-leading three-year warranty. You may have gathered that this is a power meter that is industry leading, in many respects. If you’re looking to take your training to the next level, then a power meter is the way to do that. 4iiii have been perfecting their craft in producing these devices for a number of years and already produce one of the cheapest, lightest, and most accurate devices on the market, with the Precision 3 the Canadian-based company have improved on all three points. Simply Connect And Go The 4iiii Precision 3 is chocked full of cutting-edge tech but is still simple to install. As you’d imagine, it’s Bluetooth and ANT+ enabled, so it’ll pair easily with your choice of bike computer or indoor trainer. Whether you’re road racing or smashing intervals indoors, it’s the perfect partner. From your device arriving pre-installed on a brand-new crank, to getting out for a ride is simple. Installation is the same as installing any Shimano Ultegra left-side crank arm. Once you’ve installed the crank arm, it’s merely a case of pairing with the app/your computer and that’s it: the world of watts, metrics, and marginal gains is your oyster! Within the app you can also update the firmware, check battery status, and calibrate your power meter. Reliable And Accurate Power Data It’s all well and good carting about a piece of tech that spits out fancy numbers but if the numbers aren’t accurate then there’s little point to doing so. Fear not, with the 4iiii Precision 3 power meter, you can rest assured the data you get is both accurate and reliable to +/-1%. With many years in the market, 4iiii are firmly established as reputable producers of cycling tech. So confident in their products, the brand back them all with a three-year warranty. Born in the Canadian Rockies, this isn’t a delicate piece of equipment. It’s rated to IPX7 for water resistance, so you can confidently ride into the wind and rain. Product Features: 800 hours of battery life Product status indication LED light – for wake up (green), zero offset (blue) and low battery (red) Uses patented 3D strain-gauge technology to deliver +/- 1% accuracy Slim design that fits almost every frame Three-year warranty Waterproof Rating: IPX7 Weight (in addition to crank arm): 9g Backwards compatible with current Precision Drive Side Power Meter Active temperate compensation Feature and firmware upgradability via the app Coin-cell powered by a CR2032 battery Compatible with third party training apps such as Zwift, TrainerRoad, SYSTM, and more Specifications: Cadence Range: 30-170 RPM Power Range: 0-4000 Watts Length: 63.79mm Width: 26.42mm Height: 5.5mm Operating Temperature: 0 to 50°C Storage Temperature: -40 to 60°C Communication Protocols: ANT+, Bluetooth®

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Shimano Ultegra ST-R8170 Gear Shift Lever - Left Hand
  • £299.99
  • RRP £349.99
  • Saving you £14

High performance Ultegra Wireless hydraulic Servo Wave disc brake Di2 STI's give you control, modulation and power with minimal effort in all riding conditions Wireless connectivity to the front and rear derailleurs for effortless trouble free gear shifts With 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 gear Full 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 ratio Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI Hydraulic brake lever with Servo Wave provides excellent stopping power with less effort especially from the hood position Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear Finely tuneable reach adjusters for the levers enable custom fitment for all hands Levers use CR1632 batteries which last for approximately 1.5-2 years

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Shimano Ultegra R8100 Chainset - 160mm - 50/34
  • £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 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 RD-R8150 Ultegra Di2 12-Speed Rear Derailleur
  • £299.99
  • RRP £379.99
  • Saving you £21

Now simplified with a single derailleur cage length, the new 12-speed Shimano Ultegra R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12-speed Ultegra R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28-34T low sprockets.Ultegra Shadow design with 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 gearThe rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides ANT+ connection to 3rd party devises and replaces the handlebar junctionButton on the derailleur for Di2 operations, and LED light denotes synchronized shift mode, setting mode and charge requirementsSleek appearance with low profile Shadow design construction reduces risk of damage in a crashProgrammed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shiftThe 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 shiftsDerailleur contains a saver (fuse) function, where the inner structure is protected from strong impactsHigh tolerance cold forged aluminium link plates and body construction is extremely light and durableFour self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting12-speed E-tube Di2 compatibleWide gear ratio compatible up to 11-34T

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Wahoo Elemnt Rival Multi-Sport GPS Watch
  • £299.99

ELEMNT RIVAL Multisport Watch keeps the focus locked on your performance, not your equipment. Using the intuitive ELEMNT operating system, RIVAL GPS smartwatch delivers a simple, yet powerful, user experience. Unique multisport features like Touchless Transition, Multisport Handover, and Perfect View Zoom create a seamless performance advantage whether training for a race or competing. Designed with a 64-bit color screen, ceramic bezel, and gorilla glass lens, the ELEMNT RIVAL smartwatch not only looks great for everyday use but will also withstand your hardest workouts.NEW! ELEMENT COMPANION STATISTICSThe new home for 24/7 data, we've optimized analytics in the ELEMNT Compaion App to create a statistics tab. At a glance see the goals you've set and the progress you've made against them week over week.OPTICAL HEART RATEWrist-based optical heart rate technology enables ELEMNT RIVAL to display heart rate and calorie data in real time.DATA TRACKINGELEMNT RIVAL inherently tracks the following metrics for running, cycling and swimming without the use of an external sensor paired: speed, distance, workout time, swim lengths, pace, stroke count, stroke rate, SWOLF.ELEMNT COMPANION APP SET UPThe free ELEMNT Companion App effortlessly guides you through a step-by-step set-up so that you can create customized activity profiles, track performance, update firmware, and share workout data effortlessly.FULLY CUSTOMIZABLE SCREENPreconfigured with activity profiles that can be customized with preferred metrics in the ELEMNT companion app.DUAL-BAND ANT+ AND BLUETOOTH TECHNOLOGYANT+ and Bluetooth can connect to preferred heart rate monitors, power meters, speed and cadence sensors.USB RECHARGEABLE BATTERYPowered by a USB rechargeable battery with up to 24 hours of battery life in GPS mode and 14 days in smartwatch mode.NEW! STRYD INTEGRATIONELEMNT RIVAL integrates with STRYD running pods to share data between STRYD and RIVAL to provide running power data to athletes.RACE RUNNING PROFILEUse race running profile to snap your laps to the nearest mile or kilometer during a race or your local 10K to ensure your data most closely matches the course markers.NEW! PIN WORKOUT PAGEHave a key page of metrics you are referencing during a workout? Take advantage of the RIVAL's Pin Page feature which allows you to pin a workout page during an activity, once you scroll away from that page the device will automatically revert back to your pinned page after 10 seconds.PLANNED WORKOUTSExecute planned workouts on RIVAL. Update includes 12 Wahoo Sports Science designed workouts or connect your TrainingPeaks account and your week's workouts will automatically populate on ELEMNT RIVAL, allowing you to control and scale your swimming, biking, and running workouts. Get prompted at the start of each interval and follow the new planned workout pages to keep yourself on target.WORK REST TIMERPlan out your workout intervals using the Work Rest Timer. Create set periods in your running or other workout to let you know when to put the work in and when to go easy and take a breather.TOUCHLESS TRANSITIONStart your triathlon with just the touch of a button, and let the RIVAL multisport GPS smartwach do all the work when it comes to tracking your performance. In triathlon mode, Touchless Transition allows the watch to automatically transition through the different legs of the triathlon, from swim, bike to run, without having to interact with it other than at the start and finish.MULTISPORT HANDOVERConnect your ELEMNT RIVAL and ELEMNT GPS Bike Computer profiles for a seamless display experience during the bike leg of your training or race. This feature enables the bike computer to display your cumulative workout metrics from the watch, while you still retain control of the head unit itself.MANUAL MULTISPORTA quick 5k after your swim? The Manual Multisport feature allows you to use the lap button to switch between workout profiles, when going from one activity to the next, without stopping the total workout tracking.TRACK RUNNING PROFILEGet the most accurate distance and pace metrics when running on a 400m track with the updated Track Running profile on RIVAL. After the automatic calibration, pressing the lap button can snap intervals to the nearest 100m resulting in the most accurate metrics.IN-APP WORKOUT EDITOREdit your triathlon or pool swim to the most precise representation of your performance. In the ELEMNT Companion App, you are able to manually edit each leg of your triathlon to match your official race times or your lap swim data to accurately reflect your workout.Specification:Dimensions46.5 x 46.5 x 15.3 mm,Display Size1.2 in (30.4 mm) diameter,Display TypeColor,Display Resolution240 x 240,Lens MaterialGorilla® Glass,Bezel MaterialCeramic,Case MaterialNylon Polymer,Strap MaterialSilicone,Strap Length10 in (25.4 cm),Fits wrist circumference 140 mm - 240 mm,Weight53 g,BatteryRechargeable Lithium Ion,Battery LifeSmartwatch Mode: 14 days,GPS or HR Mode: Up to 24 hours,GPS FunctionalityBuilt-in,Supported SatellitesGPS and GLONASS,Water Rating5 ATM (water resistant up to 50 meters),Perfect View Zoom ButtonsYes,Ambient Light SensorYes.In the box:ELEMNT RIVAL Multisport GPS Watch,USB charging cable,Quick Start Guide (QSG),Important Product Information guide (IPI).Supported devices:Your Smartphone is necessary for setup and to have phone, email, and alert features.ELEMNT COMPANION APP SUPPORTED DEVICES,IPHONE/IPAD,iOS 12 or newer,ANDROID,Version 6 or newer.

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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 Ultegra R8100 12 Speed Chainset - Black - 50.34t}, Black
  • £299.99

Shimano Ultegra R8100 12 Speed ChainsetThe Ultegra R8100 12 Speed Chainset from Shimano offers efficient power transfer, smooth gear shifting performance and top-quality race-ready reliability. Ideal for competitive road racing, this chainset offers the optimal balance of stiffness and strength at a low weight. Plus, it features Hollowtech II crank arms, a Hollowglide outer chainring and is compatible with most modern bottom bracket standards from Shimano.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 ChainringHollow 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 ArmsA 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 WeightThe 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. Features: Material: Hollowtech II Aluminium Series: Ultegra R8100 Series 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 Recommended Bottom Bracket: Press-Fit: SM-BB72-41B; Threaded: SM-BBR60 Q-Factor: 148mm Chainline: 44.5mm Drivetrain Speeds: 12-Speed Weight: 711g (52-36T); 700g (50-34T)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 Ultegra R8100 12 Speed Chainset - Black - 52.36t}, Black
  • £299.99

Shimano Ultegra R8100 12 Speed ChainsetThe Ultegra R8100 12 Speed Chainset from Shimano offers efficient power transfer, smooth gear shifting performance and top-quality race-ready reliability. Ideal for competitive road racing, this chainset offers the optimal balance of stiffness and strength at a low weight. Plus, it features Hollowtech II crank arms, a Hollowglide outer chainring and is compatible with most modern bottom bracket standards from Shimano.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 ChainringHollow 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 ArmsA 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 WeightThe 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. Features: Material: Hollowtech II Aluminium Series: Ultegra R8100 Series 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 Recommended Bottom Bracket: Press-Fit: SM-BB72-41B; Threaded: SM-BBR60 Q-Factor: 148mm Chainline: 44.5mm Drivetrain Speeds: 12-Speed Weight: 711g (52-36T); 700g (50-34T)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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