Genuine Hepolite Crankshaft Bearing. BSA 500cc/650cc A50/A65 (1963-73) Crankshaft bearing D/S with roller race. Triumph 650cc/750cc Unit Twins (T120/TR6/6T/T140/TR7/TR7T Trail)crankshaft Drive side bearing, 500cc/650cc Pre Unit Twins crankshaft D/S roller bearing conversion 1-1/8".
