Triumph / BSA Drive Side Crankshaft Roller Bearing - 70-9974 - B25 / C25 / TR25W / B31 Wasp * New Triumph 650 &

* New Triumph 650 & 750 Unit Twins Chrome Exhaust Header Pipe "L" Bracket Set

Quality is just as good as O

All Triumph 350 and 500 gasket sets that we have to offer (both complete and top-end) are suited for all models 1957-1974

Both chains we offer are endless (no masterlink required) and feature 84 links with two rows (duplex)

Triumph / BSA Drive Side Crankshaft Roller Bearing - 70-9974 - B25 / C25 / TR25W / B31 Wasp * New Triumph 650 &Newley 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