BSA Transmission Parts

BSA Gear Box Parts

If the time has come to rebuild your gear box or try to fix your "mis-shifting" issues, Classic British Spares has the parts you need for your transmission overhaul or "spruce up".

In the pages below you will find everything related to your "gear box" AKA "transmission" including clutch chain wheel baskets, pinion gears, oil seal kits, shift forks, tab washers, final drive sprockets, return springs, mainshafts and more.

Most parts will fit "traditional" BSA models (singles, twins and triples) including.... BSA A65, A50, A75, A7, A10, B25, C15, B31, B32, etc up to 1972.

  • We stock trusted brands from SKF, BSA (NOS), Koyo, Torrington, Cov-Seal, FAG and more..
  • All orders placed in the United States (lower 48) are eligible for free shipping - always
  • International shipping welcome on all parts orders