68.5MM  4130 CHROMOLY THREADED BOTTOM BRACKET SHELL WITH ID CENTER RELIEF

DIMS:  68.5MM X 38.1MM Ø ,  1.370" X 24TPI BSA   THREADED

RIGHT/LEFT THREADED . LEFT THREADED DRIVE SIDE OF SHELL IS IDENTIFIED BY GROOVE .

16MM WIDTH OF 1.37”x 24TPI THREADS.

SHELL WIDTH IS 5MM OVERSIZED TO ALLOW FOR POST WELD/BRAZING FACING OF EACH SIDE FOR FINISHED WIDTH OF 68MM

EST WEIGHT- 100g

SKU  TBE-BB-BSA-68-4130