The SRAM XX1 Eagle Derailleur has been specifically engineered to accommodate the Eagle drivetrains need for greater capacity, including the brand new 10-52T Eagle cassettes, while still being compatible with older 10-50T cassettes.X-Horizon design offers slick shiftingType-3 roller bearing clutch provides excellent chain retentionRe-engineered mounting system and cage lockDesigned to be used with SRAM Eagle drivetrains Suitable for new Extended Range 10-52T Eagle cassettesThe XX1 Eagle Derailleur features a 14-tooth X-SYNC lower pulley to allow for the 10-52T Extended Range cassette, a type-3 roller bearing clutch for maximum drivetrain stability with reduced derailleur bounce and chain slap, a re-engineered mounting system and a re-positioned cage lock system for easy chain and wheel installation and increased durability. Designed to be used with SRAM Eagle drivetrains and Extended Range cassettes, the XX1 is a fundamental component in the Eagle range.
Zipp's SL Sprint Stem is an ideal balance of stiffness and lightweight. The stem weighs in at just 1.8g per newton meter of stiffness using SRAM s Exogram technology and was designed with feedback from top pros to meet the unrelenting demands of Grand Tour sprinters. Updated distinctive Zipp cosmeticsDesigned using SRAM Exogram technology and weighs just 123g (100mm)12 degree drop for an aggressive riding position Secure our bolt faceplace using titanium Torx T25 bolt headsZipp also tapped into expertise gained from its pioneering carbon stems and exhaustively researched the marketplace to create the SL Sprint Stem. The SL Sprint comes with its own stem cap that s designed to be aerodynamically efficient by blending into the stem body. If you want the ultimate lightweight and stiff stem for your road bike, look no further than the Zipp SL Sprint!
Zipp s SL Speed Seatpost has become a favourite of road and cyclocross pros because of its light weight and dependability. It makes the perfect finishing touch to any high-end drop bar bike!Updated distinctive Zipp cosmeticsDesigned using SRAM Exogram technology400mm length suitable for compact road and gravel framesCompatible with Shimano DI2 seatpost battery (mount not included - sold separately) Zipp s engineers used SRAM s Exogram technology to make the tube as lightweight as possible and optimized our clamping system for adjustability, security, and ease of use. What s more, the SL Speed is available in a 400mm length to accommodate road bikes with compact frame geometry. If you want the ultimate lightweight and compliant seatpost for your drop bar bike, the Zipp SL Speed is the perfect choice!
Zipp s SL Speed Seatpost has become a favourite of road and cyclocross pros because of its light weight and dependability. It makes the perfect finishing touch to any high-end drop bar bike!Updated distinctive Zipp cosmeticsDesigned using SRAM Exogram technology400mm length suitable for compact road and gravel framesCompatible with Shimano DI2 seatpost battery (mount not included - sold separately) Zipp s engineers used SRAM s Exogram technology to make the tube as lightweight as possible and optimized our clamping system for adjustability, security, and ease of use. What s more, the SL Speed is available in a 400mm length to accommodate road bikes with compact frame geometry. If you want the ultimate lightweight and compliant seatpost for your drop bar bike, the Zipp SL Speed is the perfect choice!
Zipp s SL Speed Seatpost has become a favourite of road and cyclocross pros because of its light weight and dependability. It makes the perfect finishing touch to any high-end drop bar bike!Updated distinctive Zipp cosmeticsDesigned using SRAM Exogram technology400mm length suitable for compact road and gravel framesCompatible with Shimano DI2 seatpost battery (mount not included - sold separately) Zipp s engineers used SRAM s Exogram technology to make the tube as lightweight as possible and optimized our clamping system for adjustability, security, and ease of use. What s more, the SL Speed is available in a 400mm length to accommodate road bikes with compact frame geometry. If you want the ultimate lightweight and compliant seatpost for your drop bar bike, the Zipp SL Speed is the perfect choice!
Garbaruk's 11-Speed SRAM XD Cassette is lightweight, durable and perfect for updating your drivetrain to a wider gear range! With a trick construction and equally trick looks, the 11-Speed SRAM XD Cassette is a real connoisseur's choice!Lightweight & high quality chromoly steel with aluminium largest cog for incredible durabilityHeat treated monoblock design for lightest possible weightDesigned for SRAM XD freehub bodiesProvides smooth shifting and no chain drop when back pedallingSRAM MTB Derailleurs require Garbaruk RD Cage for 11-50T option (Sold separately)SRAM Road Derailleurs require Garbaruk RD Cage for 10-46T & 10-50T option (Sold separately)The 11-Speed SRAM XD Cassette is designed to be the most durable and lightweight 11-speed wide-range cassette, compatible with SRAM XD freehubs. Manufactured using high-quality chromoly steel alloy coupled with the strongest possible aluminium largest cog, it's the ultimate solution for all riders out there who are looking for efficient way to enhance the performance of their MTB or road/CX bike. The cassette is machined and heat-treated to create a monoblock cassette out of steel with only largest cog made out of aluminium. This allows for the best possible durability and rigidity while keeping weight extremely low. If you want it all from your cassette when it comes to performance and durability, look no further than the Garbaruk 11-Speed SRAM XD Cassette!
Garbaruk's 11-Speed SRAM XD Cassette is lightweight, durable and perfect for updating your drivetrain to a wider gear range! With a trick construction and equally trick looks, the 11-Speed SRAM XD Cassette is a real connoisseur's choice!Lightweight & high quality chromoly steel with aluminium largest cog for incredible durabilityHeat treated monoblock design for lightest possible weightDesigned for SRAM XD freehub bodiesProvides smooth shifting and no chain drop when back pedallingSRAM MTB Derailleurs require Garbaruk RD Cage for 11-50T option (Sold separately)SRAM Road Derailleurs require Garbaruk RD Cage for 10-46T & 10-50T option (Sold separately)The 11-Speed SRAM XD Cassette is designed to be the most durable and lightweight 11-speed wide-range cassette, compatible with SRAM XD freehubs. Manufactured using high-quality chromoly steel alloy coupled with the strongest possible aluminium largest cog, it's the ultimate solution for all riders out there who are looking for efficient way to enhance the performance of their MTB or road/CX bike. The cassette is machined and heat-treated to create a monoblock cassette out of steel with only largest cog made out of aluminium. This allows for the best possible durability and rigidity while keeping weight extremely low. If you want it all from your cassette when it comes to performance and durability, look no further than the Garbaruk 11-Speed SRAM XD Cassette!
The SRAM Force 1 crankset brings to cyclocross a game-changing upgrade in performance and reliability by combining the durability, simplicity, and efficiency of SRAM s Force 22 road combined with our MTB 1x technology, X-SYNC. The crankset features unidirectional carbon cranks arms which are matched to a forged alloy spider for lightweight and durability. The chainrings feature SRAM X-SYNC technology which provide the highest level of performance and durability. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Bottom bracket not included.
The Bont Helix sets a new benchmark for high-performance road cycling shoes. With a 100% carbon sole, heat moldable fit and a weight of less than 520g per pair, the Helix is ready for long days in the saddle and races alike.100% carbon sole is designed for maximum performance at a class leading weightPerforated upper is light and durable, while air vents improve breathabilitySingle BOA IP1 retention system allows for easy, consistent adjustmentFully heat moldable chassis allows you to get the perfect fitIncredibly lightweight at just 520g per pairFrom the outset, Bont designed the Helix to be one of the best road-cycling shoes you can buy. The Helix doesn't skimp on features, and uses a 100% carbon sole with a slim 3.6mm stack height and excellent stiffness to offer maximum performance. The carbon sole also helps keep weight down to just 520g per pair.Any set of cycling shoes is likely to see a lot of abuse and needs to perform to a high-level, so Bont has utilised a light and breathable but tough perforated upper that is incredibly durable and built to last. Air vents on the front bumper help to improve breathability, so even in the height of summer, you won't struggle with hot feet.Fit on any cycle shoe is important, and Bont have equipped the Helix with a fully heat moldable chassis so you can ensure you have the perfect personalised fit just for you. With the fit sorted you'll want to make sure the shoes stay put and thanks to the use of a BOA IP1 retention system you can be sure the Helix is going nowhere, even under hard, out of the saddle sprints. Light, stiff, comfortable with a customised fit, the Bont Helix is perfect for riders who the very best in performance.Size Chart:
Designed to cater for the ever-growing e-bike market, the Exposure Lights Flex e-Bike Front Light is perfect for thrashing your e-bike off-road at night. With up to 3300 lumens, the Flex has all the power you'll need.3x XPL2 Cree LEDs emit a massive 3300 lumens to light the trail ahead in incredible detailPowered by your e-Bikes batterySimple forged aluminium bracket for central mounting positionWired remote allows for easy changing of modes on the moveMade In The UK with 2 Year WarrantyIn The Box: Flex, E-Bike Handlebar Bracket, QS GuideThe 3 XPL2 Cree LEDs provide a massive 3300 lumens in the highest-power mode, illuminating the trail in incredible detail and making riding at night easier than ever before. The Reflex Technology tailors the amount of light depending on the terrain, becoming brighter when descending and dimmer when climbing. The wired remote make it easy to change modes on the go, while the forged aluminium bracket gives a central position for the light, allowing you to focus on the trail ahead. Lightweight, compact and extremely versatile, if you ride your e-Bike off road at night, you need the Exposure Lights Flex in your life! Includes: Flex e-Bike Front Light, Fixed handlebar bracket, Quick Start guide
The Bont Helix sets a new benchmark for high-performance road cycling shoes. With a 100% carbon sole, heat moldable fit and a weight of less than 520g per pair, the Helix is ready for long days in the saddle and races alike.100% carbon sole is designed for maximum performance at a class leading weightPerforated upper is light and durable, while air vents improve breathabilitySingle BOA IP1 retention system allows for easy, consistent adjustmentFully heat moldable chassis allows you to get the perfect fitIncredibly lightweight at just 520g per pairFrom the outset, Bont designed the Helix to be one of the best road-cycling shoes you can buy. The Helix doesn't skimp on features, and uses a 100% carbon sole with a slim 3.6mm stack height and excellent stiffness to offer maximum performance. The carbon sole also helps keep weight down to just 520g per pair.Any set of cycling shoes is likely to see a lot of abuse and needs to perform to a high-level, so Bont has utilised a light and breathable but tough perforated upper that is incredibly durable and built to last. Air vents on the front bumper help to improve breathability, so even in the height of summer, you won't struggle with hot feet.Fit on any cycle shoe is important, and Bont have equipped the Helix with a fully heat moldable chassis so you can ensure you have the perfect personalised fit just for you. With the fit sorted you'll want to make sure the shoes stay put and thanks to the use of a BOA IP1 retention system you can be sure the Helix is going nowhere, even under hard, out of the saddle sprints. Light, stiff, comfortable with a customised fit, the Bont Helix is perfect for riders who the very best in performance.Size Chart:
Introducing the Garmin Edge 130 plus the most compact GPS bike computer with premium training features. Whether you ride to explore new trails or to save the planet in your daily commute, go with Edge 130 Plus.Simplified, rugged design with 1.8-inch display that s crisp and easy to read in sunlight or low-light conditionsGet training guidance by syncing structured indoor or outdoor workouts to your device from the Garmin Connect app or other apps, including TrainingPeaks and TrainerRoadImprove your fitness with dynamic performance insights such as VO2 max and heart rate, and manage your efforts during tough ascents with the ClimbPro featureKnow where you ve been, where you re headed and how to get back to start with turn prompts and a breadcrumb mapCycling awareness features give loved one s peace of mind; get incident detection and assistance both of which send your real-time location to emergency contacts - plus compatibility with Varia rear view radar and lightsKnow how far, fast, hard and high you ve ridden with data from GPS, GLONASS and Galileo satellites and an altimeterTrack jump count, jump distance and hang time with mountain bike dynamicsBattery life: up to 12 hoursSpecifications:Physical dimensions: 41 x 63 x 16 mmDisplay size: 1.8" (45.0 mm) diagonalDisplay resolution: 303 x 230 pixelsWeight: 33gBattery type: Rechargeable lithium-ionBattery life: 12 hoursWater rating: IPX7Maps and Memory:Storage and power capacity: Internal memory onlyWaypoints/favourites/locations: 100 locationsRoutes:30 coursesHistory: 100 hoursSensors:GPSGlonassGalileoBarometric altimeterAccelerometerDaily Smart features:Connectivity: Bluetooth, ANT+Connect IQ (downloadable watch faces, data fields, widgets and apps):Yes (data fields only)Smart notificationsWeatherSmartphone compatibility: iPhone, Android Safety and tracking features:LivetrackIncident detectionAssistanceWeather alertsActivity tracking features:Calories BurnedTraining, planning and analysis features:Customisable screen(s)Auto pauseAdvanced workoutsDownloadable training plansAuto lapVo2 maxRecovery advisorVirtual partnerRace an activitySegmentsAuto scrollPhysio trueupOutdoor recreation features:Climbpro ascent plannerCycling features:Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)CoursesMTB dynamicsPower meter compatibleCompatible with Varia radar (rear-facing radar)Compatible with Varia lightsConnectivity:Edge remoteSmart trainer controlIn the box:Edge 130 PlusMountain bike mountEdge remoteBlack silicone caseSpeed sensorTetherUSB Charge CableDocumentation
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
Ultegra's new 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 line up, 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.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 ridersHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability (sold separately)