BSA Crankshaft Roller Bearing Shim Cup (1) 71-3288 - 1966-72 - A50 / A65 Nicholson Finally a quality set to

Finally a quality set to mount your "TT" exhaust pipes

BSA A7 and A10 models from 1957-1963 and many other late model applications

OEM part number is 70-4148

BSA A50 and A65 (Lightning

Fits Triumph 650 models (Bonneville

BSA Crankshaft Roller Bearing Shim Cup (1) 71-3288 - 1966-72 - A50 / A65 Nicholson Finally a quality set to*Stock Is Limited!* New Top Quality BSA Unit Twins Crankshaft Roller Bearing Shim Cup Retainer. With the Modern Replacement Roller Bearings on the Market today, they are "Slightly" different from the Original Hoffmann Roller Bearings, which means you have to use this Shim Cup in Conjunction! Specifically, New RHP Roller Bearings (70 2879 or 68 0625) have a slightly Wider Inner Race then the Stock Hoffmann Bearings causing the Shim Cup not to fully fit