Key Features:
- HollowTech II integrated bottom bracket design uses a wide bearing placement with a large axle diameter for increased stiffness, efficiency and added durability
- SG-X chainring with patented spike pins give smooth and fast gear shifts under load
- Lightweight aluminium outer with steel/glass fibre composite inner chainring
- We recommend that the bottom bracket is initially installed by a bike shop to ensure perfect facing and fit
- 48.8 mm chain line for use with 135 /142 mm O.L.D. frames
- 51.8mm chain line for use with Boost 148mm O.L.D frames
- 96 / 64 mm bolt circle diameter
- 10-speed Dyna-Sys compatible





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