A high performance chainset from the classic MTB group, using the most advanced 11-speed Dyna-Sys chainrings
Forged HollowTech II aluminium cranks offer unrivalled strength-to-weight ratio
Lightweight construction with external super smooth bottom bracket bearings for efficient use
Hollow chainrings using drilled steel and carbon composite construction middle ring, combined with a thicker aluminium and carbon composite outer ring, and plated aluminium inner ring for excellent rigidity and durability
Close ratio gear combination: 40-30-22T provides improved cadence while reducing pedal feedback on suspension bikes
HG-X chainring with patented spike pins give smooth and fast gear shifts under load
Stiffness and strength increased with advanced design due to wider spaced bearings and oversized axle
70 degree spider arm for optimal rigidity
For use with 11-speed HG-X MTB chains only
We recommend that this bottom bracket is initially installed by a bike shop to ensure perfect bottom bracket facing and fit