Triumph 650 750 5 speed Gearbox high gear roller Bearing 60-4100 Triumph 650 This is the best spring

This is the best spring kit in the world for the Unit 500 head

These rings will work with all of the many Unit 500 models

a head gasket can be added in the drop down list

These high quality springs are wound with super clean chrome silicon wire that is then heat treated and shot peened

These genuine Amal monobloc needle jets are factory flow calibrated to insure accuracy

Triumph 650 750 5 speed Gearbox high gear roller Bearing 60-4100 Triumph 650 This is the best springHighest quality Hepolite high gear bearing, used in many 5 speed Triumph and BSA applications from 1972 1982. Part number 60 4100. This roller bearing has . 3125" rollers and is designed for use on 5th gears with a race width of . 318". (Will not work with the early 5 speed gears with a . 348" wide bearing race.) Please check before ordering. New bearings are essential for any Triumph gearbox rebuild. All of our bearings are in sealed factory