Monthly Archives: September, 2015

Changing Triumph 650 4-Speed to a 5-Speed

Update To A 5-Speed Gearbox There have been many iterations of the Triumph 5-Speed transmission. Not all 5-Speeds gear sets are the same. The early gear sets first offered in the 1971 model year turned out to be problematic. If used hard they would break. This wasn’t discovered during testing, but only after the bikes […]