Taking many features from pro-level equipment this 2-piece cap-free design Tiagra chainset offers unbeatable performance 2-piece cap-free design is quick & easy to install whilst being lighter & stiffer than a traditional crank/ bottom bracket assembly SG-X chainrings feature strategically placed chain pick-up pins & tooth profiles to ensure fast & positive shifting Designed to work with Hollow Tech II type bottom bracket cups Compatible with 10-speed HG-X chains Anodized aluminium crank arms Lightweight aluminium chainrings 4 arm 110 mm bolt circle diameter ...

Lightweight Hollow Tech II 105 10-speed chainset Innovative Hollow Tech forged & anodised aluminium crank arms utilise a hollow design that minimises flex & keeps the weight low The chainring teeth have been developed to work in conjunction with the CN-5701 chains for increased contact to provide greater efficiency & enhanced power transfer Hollow Tech II allows the bottom bracket bearings to be spaced wider apart (outboard from the frame) enabling the use of larger bearings & an increased axle diameter The system allows for easier installation adjustment & maintenance Lightweight anodised SG-X aluminium chainrings for smooth & precise shifting For use with ST-5700 ST-6700 or ST-7900 ...

Lightweight Hollow Tech II 105 10-speed chainset Innovative Hollow Tech forged & anodised aluminium crank arms utilise a hollow design that minimises flex & keeps the weight low The chainring teeth have been developed to work in conjunction with the CN-5701 chains for increased contact to provide greater efficiency & enhanced power transfer Hollow Tech II allows the bottom bracket bearings to be spaced wider apart (outboard from the frame) enabling the use of larger bearings & an increased axle diameter The system allows for easier installation adjustment & maintenance Lightweight anodised SG-X aluminium chainrings for smooth & precise shifting For use with ST-5700 ST-6700 or ST-7900 ...

Lightweight Hollow Tech II 105 10-speed chainset Innovative Hollow Tech forged & anodised aluminium crank arms utilise a hollow design that minimises flex & keeps the weight low The triple chainring teeth have been developed to work in conjunction with the CN-5600 chains for enhanced up & down shifting Hollow Tech II allows the bottom bracket bearings to be spaced wider apart (outboard from the frame) enabling the use of larger bearings & an increased axle diameter The system allows for easier installation adjustment & maintenance Lightweight anodised SG-X aluminium chainrings for smooth & precise shifting For use with ST-5703 or ST-6700 ...

Features: Lightweight Hollow Tech II 105 10-speed chainset Innovative Hollow Tech forged & anodised aluminium crank arms
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The Hollow Tech II 10-speed Ultegra chainset offers an ideal balance of light weight & stiffness making it the perfect choice for both enthusiast & competitive riders Hollow Glide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex & hugely improves shift performance even under high load The chainring teeth have been developed to work in conjunction with the & CN6600 chains for increased contact to provide greater efficiency & enhanced power transfer Industy leading Hollow Tech II cold forged hollow crank arms have been evolved to increase rigidity reduce weight & improve strength A wide range of chainring options & crank armlengths are available to meet the needs of all riders & racing disciplines Hollow Tech II integrated bottom bracket uses a widerbearing placement & larger axle diameter for increased stiffness & efficiency Hollow Tech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling & increased durability Weight including bottom bracket 785 grams ...

The Hollow Tech II 11-speed Ultegra chainset offers an ideal balance of light weight & stiffness making it the perfect choice for both enthusiast & competitive riders Hollow Glide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex & 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 & enhanced power transfer Industry leading Hollow Tech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight A wide range of chainring options & crank arm lengths are available to meet the needs of all riders & racing disciplines Hollow Tech II integrated bottom bracket uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency Hollow Tech II integrated bottom bracket seal design has minimal bearing interfaceensuring smooth rolling & increased durability ...

Optimum power transfer & lighter weight maintains efficiency New chain guide design to reduce chain drop 4-arm construction crankset maintains high rigidity & reduces weight HOLLOWGLIDE chainrings maintain smooth shifting whilst reducing weight & increasing stiffness 110mm Pitch Circle Diameter for both compact & regular versions making gear ratio changes easy 50-34T/53-39T/54-42T/55-42T/52-36T/52-38T (New combination) Weight: 683g (53-39T with Bottom Bracket) ...

The Hollow Tech II 10-speed CX50 cyclo-cross chainset is the perfect choice for enthusiast riders Alloy chainrings are both rigid & lightweight The chainring teeth have been developed to work in conjunction with the 10-speed directional HG road chains for increased contact to provide greater efficiency & enhanced power transfer Industry leading cold forged crank arms have been evolved to increase rigidity reduce weight & improve strength 2-piece cap-free design is quickand easy to install whilst being lighter & stiffer than a traditional crank / bottom bracket assembly Integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling & increased durability 46 / 36T chainrings using 110 mm bolt circle diameter ...

The Hollow Tech II 10-speed CX70 cyclo-cross chainset offers an ideal balance of light weight & stiffness making it the perfect choice for both enthusiast & competitive riders Machined alloy outer chainring is both rigidity & lightweight The chainring teeth have been developed to work in conjunction with the CN7901 & CN6701 10-speed directional HG chains for increased contact to provide greater efficiency & enhanced power transfer Industry leading Hollow Tech II cold forged hollow crank arms have been evolved to increase rigidity reduce weight & improve strength A wide range of crank arm lengths are available to meet the needs of all riders Hollow Tech II integrated bottom bracket uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency Hollow Tech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling & increased durability 46 / 36T chainrings using 110 mm bolt circle diameter ...