83.5MM  4130 CHROMOLY THREADED BOTTOM BRACKET SHELL

DIMS:  83.5MM X 38.1MM Ø ,  1.370" X 24TPI BSA  THREADED

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

CLICK HERE FOR PDF DRAWING OF SPEC SHEET

SHELL WIDTH IS .5MM OVERSIZED TO ALLOW FOR POST WELD/BRAZING FACING OF EACH SIDE FOR FINISHED WIDTH OF 83MM

EST WEIGHT - 115g

SKU- TBE-BB-BSA-83-4130