Triumph BSA Crankshaft Main Bearing 70-1591 67-1420 MJ 1 1/8 C3 A65 T120 TR6 RHP
*Genuine!* RHP Triumph & BSA Unit & Pre-Unit Twins Crankshaft Ball Bearing. Looking for the absolute best quality bearing to install into your Triumph & BSA? Well you have found it! This bearing is made by the O.E.M. manufacture by RHP in England! For the unaware this bearing has the correct "C3" or "Clearance 3" for the models listed below! We recommend installing this "C3" bearing! Installing a bearing with the wrong clearance could lead to engine failure, seizure or vibration. Fits Triumph 650 Unit Twins (Bonneville, T120, Tiger, TR6, Trophy, TR6C, T120TT, TR6SS, T120C, Thunderbird, TR6SR, TR6SC & 6T) from 1963-1965 on the Drive Side & Timing Side. Fits all Triumph 650 Unit Twins (Bonneville, T120, Tiger, TR6, Etc) on the Timing Side only from 1966-1971. Fits a wide range of Triumph Pre-Unit 350, 500 & 650 Twins. Also fits all BSA Unit Twins (Star Twin, Lightning Rocket, Thunderbolt Rocket, Royal Star, Etc) from 1962-1965. Please refer to your parts catalog for proper fitment.
*****Please note that this bearing is not suitable for Triumph & BSA Triples!*****
•O.E.M Part number is 70-1591 or 67-1240