T47 threaded bottom bracket shell combines the oversized interface benefits of PF30 and EVO386 with the reliability of a threaded system. Designed for 85.5 mm and 86.5 mm-wide T47 inboard frame designs, the T47/86 positions the bearings inside the frame’s width.
Developed by custom frame builders, the T47 standard features a 47mm inner diameter and a threaded interface. This design offers the structural advantages of an oversized and wide shell, along with the practical ease and security of threads.
T47/86 or T47 inboard bottom bracket is designed to accommodate 24mm Shimano spindle cranks on T47 85.5/86.5 mm width frames. It places the bearings inside ("IN") the width of the frame.
T47/86 Inboard Bottom Bracket for Shimano
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;
Installation adapter included;
