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 delivering 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 g for M770 in 175 mm