| Description | - A high performance chainset from the classic ATB group, offering the most advanced features
- Forged HollowTech II aluminium cranks offer unrivalled strength-to-weight ratio
- Lightweight construction with external super smooth bottom bracket bearings for efficient use
- Drilled steel and carbon composite construction middle ring combined with a thicker aluminium double anodized 44 tooth, and plated aluminium 22 tooth ring for excellent rigidity and durability
- SG-X chainrings deliver a smooth precise shift and are Hyperdrive compatible
- Stiffness and strength increased with advanced design due to wider spaced bearings and oversized axle
- 44 / 32 / 22 tooth 9-speed chainrings
- We recommend that this bottom bracket is initially installed by a bike shop to ensure perfect bottom bracket facing and fit
- Comes complete with bottom bracket for 68 and 73 mm frames
- Weight: 853 grams for M770 in 175 mm
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