BSA Transmission 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
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Hollow Dowel (1) - 70-8010 - .312" X .503" X 1/4" $ 4.95 USD -
Inspection Plug / Cap Fiber Washers (1) - NE507 - B25 / T100 / A65 / T120 / T140 $ 1.25 USD -
Kick Start Lever Folding Pedal Spring & Ball (1) - Choose Part Type from $ 0.75 USD -
Kickstart Ratchet Pinion Spring (1) - 57-2684 - 1965-72 - B40 / B25 / B44 / C15 / TR25W $ 8.95 USD -
Late 1969 BSA A65 Cam Plate 57-2767 $ 99.95 USD -
O-Ring (1) 60-4419 $ 3.50 USD -
Primary / Gear Box Slotted Inspection Caps (W/ O-Ring) - 57-2166 & 70-8782 $ 14.95 USD -
Renold Replacement Motorcycle Primary Chain - Choose Size / Brand from $ 49.95 USD -
Renold Replacement Motorcycle Rear Drive Chain - Choose Size / Brand from $ 43.95 USD -
Split & Roll Pins (1) - Choose Pin Type $ 1.95 USD -
Triumph / BSA 3-Spring Billet Alloy Clutch Pressure Plate - T90 / T100 / T120 / A65 / T140 $ 64.95 USD -
Triumph / BSA 4-Speed High Gear Ball Bearing (1) - 60-3556 - A65 / TR6 / T120 / 6T / T150 $ 42.95 USD -
Triumph / BSA 5 Speed Gearbox Sprocket O-Ring (1) - 71-1070 $ 4.95 USD -
Triumph / BSA 5-Speed High Gear Needle Bearing (1) - 60-3511 - 1973-82 - T140 / A75 $ 24.95 USD -
Triumph / BSA 5-Speed Mainshaft Bearing Circlip (1) 57-4113 1971-83 $ 7.95 USD -
Triumph / BSA Clutch Chain Wheel Basket - 57-4198 - 1959-73 - C15 / B25 / B44 / TR25W $ 169.95 USD -
Triumph / BSA Complete Clutch Hub Assembly's (1) - TR6 / T120 / T140 / A65 - Choose Hub Type from $ 179.95 USD -
Triumph / BSA High Gear Bearing Circlip (1) - 70-0489 - A50 / A65 / T120 / T140 $ 9.95 USD -
Triumph / BSA Kickstart Lever Cotter Pin W/ Nut & Washer - 57-1222 $ 12.95 USD -
Triumph / BSA Kickstart Quadrant Bushing (1) - 57-2642 - C15 / B40 / B44 - 1962-72 $ 34.95 USD