87.5MM  Gr.9 TITANIUM T47 THREADED BOTTOM BRACKET SHELL.NOW 52MM OD SO BETTER DEAL WITH DISTORTION , ESPECIALLY AT THE THREADS. - SHELL IS STILL CENTER RELEIVED.

DIMS:  87.5MM X 50.8MM Ø , M47X1.0  THREADED

RIGHT/LEFT THREADED . LEFT THREADED DRIVE SIDE OF SHELL IS IDENTIFIED BY GROOVE . THE INTERNAL CENTER IS RELIEVED . 16MM WIDTH OF THREADS.

SHELL WIDTH IS 1MM OVERSIZED TO ALLOW FOR POST WELD FACING OF EACH SIDE FOR A FINISHED WIDTH OF 86.5MM

EST WEIGHT - 140 g

SKU- TBEK-BB- T47-86.5-GR9