T47 threaded bottom bracket shell combines the oversized interface benefits of BBright system with the reliability of a threaded system. Designed for 77/79mm asymmetrical shell, the T47a (BBright) Bottom Bracket for Shimanopositions the non-drive side bearings within the frame, and the drive side bearing outboard.
T47a (BBright) Bottom Bracket for Shimano
$299.00Price
CNC aluminium BB cups;
ABEC7 high chrome vacuum degassed bearing steel races with quenching and tempering hardening;
Grade 3 Si3N4 ceramic bearing balls;
Nylon bearing retainer;
Dual lips light contact rubber bearing seals;
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