Triumph / BSA 650 Twins Crankshaft Main Bearing 70-1591T C3 MJ 1 1/8 6T T120 A65

  • Sale
  • Regular price $ 45.00
  • 5 available


New Triumph & BSA Unit & Pre-Unit Twins Economy Crankshaft Ball Bearing. Yes we all know bearings can be expensive for your vintage Triumph or BSA motorcycle which is exactly why we started to stock this "economy" bearing. This bearing is made in Taiwan and has been race proven! This bearing is almost half the cost of the leading RHP brand or SKF bearings. Bearing has the correct "C3" or "clearance 3" for the models listed as folowed: Fits Triumph 650 Unit Twins (Bonneville, T120, Tiger, TR6, Trophy, TR6C, T120TT, TR6SS, T120C, etc) 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.*****



•Made in Taiwan
•O.E.M Part number is 70-1591 or 67-1240