You can use a 1/4" bolt to mount the unit
The only models that used the "CN" type bearing where the Triumph & BSA triples (T150
Bearings may also fit other applications not listed
etc) from 1971-1974 with the rear conical hub
* New Top Quality English Made Triumph Alloy Crankcase Breather Stub Pipe
Triumph 650 / 750 Chrome Gear Shift Lever (1) - 57-3757 J.B. Nicholson You can use a 1/4"New! Triumph EMGO Chrome Gear Shift Lever. Fits Triumph Unit 650 & 750 models (Bonneville, T120, T140, Tiger, TR7, Trophy, TR6C, etc) up to 1975. Also fits Triumph 750 models with the "Left Hand" side gear shifter from 1975 & On. Please refer to your parts catalog for proper fitment. *****Please note that this Lever will only fit Triumph 650 & 750 Unit Twins!***** Made by EMGO O. E. M Part number is 57 1750, T1750, T3757 or 57 3757