Today we would like to offer you new RHP crankshaft ball bearings for both Triumph & BSA twins. To be clear, we offer 2 types of ball bearings with the CN & C3 racing for 2 different applications - both bearing measure the same @ 1.1250" (ID), 2.8125" (OD) & .8125" (wide)
"C3" crankshaft ball bearings fitted to Triumph 650 unit twins on both the drive side and timing side from 1963-1965 and also Triumph 500 & 650 pre-unit twins on both sides. BSA A50 & A65 unit twins from 1962-1965 used a "C3" ball bearing
The only models that used the "CN" type bearing where the Triumph & BSA triples (T150, A75, T160, etc). Please select the bearing you need based off the info we have provided you...
- Made in England by RHP
- OEM part number is 70-1591, E1591 & 67-1240
- Free shipping in the USA (lower 48)