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 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 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;
