The HollowTech II 11-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 11-speed HG-EV 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 and 410mm chain stay length 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)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
The new Shimano Ultegra R8000 chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.The HollowGlide hollow outer chain ring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, and with HollowTech II cold forged 4 arm hollow cranks, this chainset saves weight whilst making sure that none of your effort is lost when you're putting the power down.The Hollowtech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency, and the bottom bracket seal design features a minimal bearing interface to offer incredibly smooth rolling and increased durability. The wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135/142 mm and 410mm chain stay length.With a wide range of chainring options and crank lengths their is something available to meet the needs of all riders and racing disciplines.Industry leading Hollowtech II 4 arm cold forged hollow crank armsWide range of chainring ratios & crank arm lengths availableHollowtech II integrated bottom bracket designBottom bracket seal design has a minimal bearing interfaceCrank arm length: 170, 172.5 & 175mmRatio: 50/34T, 52/36T & 53/39TWeight from 674g (50/34T)
Castelli Alpha Ultimate Insulated JacketWaterproof, warm and with a double-layer Alpha construction for temperature control, the Castelli Alpha Ultimate Insulated Jacket is the ultimate winter cycling jacket.If you're serious about your winter training, you'll be wanting to keep warm and dry when the weather is against you. And here the Alpha Ultimate Insulated Jacket ensures there's nothing to stop you from building fitness. Polartec® Alpha®Keeping you warm but without adding weight, Polartec® Alpha® active insulation forms an inner layer of the jacket. Made for the demands of aerobic activities, Alpha® maintains warmth while also preventing excess sweat from chilling you from the inside. With terrain and effort levels rising and falling it maintains outstanding comfort.Two-Layer ConstructionWhen the weather turns wet and wild, the waterproof Polartec® NeoShell® outer layer provides dependable rain protection. The four-way stretch also gives a snug fit so there's no wasted energy. Seams most exposed to the weather at externally taped to prevent seepage over the course of your ride. It’s breathable too, preventing excess sweat build-up.Next comes the insulated Alpha layer as mentioned above. Both outer and inner feature their own zippers, letting you control ventilation independent of each layer. During a climb or hard efforts open up the outer to boost airflow. This keeps you drier and sweat-free for when you zip back up for the fast downhill or you back off the pace.Performance FeaturesAll the details needed for a comfortable winter ride have been honed. A no-sew bonded waist hem gives a snug and flat fit. Anatomic cuffs work with winter gloves to fully seal out the elements. And reflective Reflex details keep you more visible in low light.Features:Materials: 100% Polyamide; Inner: 100% PolyesterWaterproof Polartec® NeoShell® 4-way stretch outer fabricInsulating layer in Polartec® Alpha® active insulation for more warmth and breathabilityCritical external seam taping for effectively waterproof protection in normal riding conditionsDouble-layer Alpha construction separates an insulating layer from wind/water barrier to let you better regulate ventilationDouble-opening YKK® Vislon® zipper slides easily for better regulation of airflowNo-sew bonded hem lies flat and seals out windAnatomically shaped cuff integrates with glove to prevent cold wind or water from entering at wrist3 rear pocketsReflex zones at lower back, on shoulders, and around wristsZippered secure side pocket for valuablesWeight: 371gSuggested Temperature range: -5 to 12 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Alpha Ultimate Insulated JacketWaterproof, warm and with a double-layer Alpha construction for temperature control, the Castelli Alpha Ultimate Insulated Jacket is the ultimate winter cycling jacket.If you're serious about your winter training, you'll be wanting to keep warm and dry when the weather is against you. And here the Alpha Ultimate Insulated Jacket ensures there's nothing to stop you from building fitness. Polartec® Alpha®Keeping you warm but without adding weight, Polartec® Alpha® active insulation forms an inner layer of the jacket. Made for the demands of aerobic activities, Alpha® maintains warmth while also preventing excess sweat from chilling you from the inside. With terrain and effort levels rising and falling it maintains outstanding comfort.Two-Layer ConstructionWhen the weather turns wet and wild, the waterproof Polartec® NeoShell® outer layer provides dependable rain protection. The four-way stretch also gives a snug fit so there's no wasted energy. Seams most exposed to the weather at externally taped to prevent seepage over the course of your ride. It’s breathable too, preventing excess sweat build-up.Next comes the insulated Alpha layer as mentioned above. Both outer and inner feature their own zippers, letting you control ventilation independent of each layer. During a climb or hard efforts open up the outer to boost airflow. This keeps you drier and sweat-free for when you zip back up for the fast downhill or you back off the pace.Performance FeaturesAll the details needed for a comfortable winter ride have been honed. A no-sew bonded waist hem gives a snug and flat fit. Anatomic cuffs work with winter gloves to fully seal out the elements. And reflective Reflex details keep you more visible in low light.Features:Materials: 100% Polyamide; Inner: 100% PolyesterWaterproof Polartec® NeoShell® 4-way stretch outer fabricInsulating layer in Polartec® Alpha® active insulation for more warmth and breathabilityCritical external seam taping for effectively waterproof protection in normal riding conditionsDouble-layer Alpha construction separates an insulating layer from wind/water barrier to let you better regulate ventilationDouble-opening YKK® Vislon® zipper slides easily for better regulation of airflowNo-sew bonded hem lies flat and seals out windAnatomically shaped cuff integrates with glove to prevent cold wind or water from entering at wrist3 rear pocketsReflex zones at lower back, on shoulders, and around wristsZippered secure side pocket for valuablesWeight: 371gSuggested Temperature range: -5 to 12 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.