Triumph / BSA Drive Side Crankshaft Roller Bearing - 70-9974 - B25 / C25 / TR25W / B31 Gaskets play an important role

Gaskets play an important role in an engine

Check your parts book and numbers to ensure the best fitment

Rim locks can be used on both front or rear wheel depending on the application

New EMGO Triumph & BSA Oil In Frame Passenger Rear Footrest Rubber Set

New Triumph / BSA twins exhaust pipe balance tube

Triumph / BSA Drive Side Crankshaft Roller Bearing - 70-9974 - B25 / C25 / TR25W / B31 Gaskets play an important roleNewley manufactured for 2026, Hepolite is now offering these beautifully made crankshaft roller bearings for many BSA unit and pre unit singles. Features a steel cage with 9 rollers Fits BSA Unit singles (C25, B25 & B44) from 1967 On. BSA B31 & B33 from 1949 1959. BSA B32 & B34 Competition from 1949 1957. Drive Side for M20 & M21 models from 1945 1957. Drive Side & Timing side on BSA B50 models from 1971 1972. Also fits Triumph TR25W Trophy drive side