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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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