Motorcycles Triumph

Repair your own Vintage Triumph Pre Unit Gearbox, it’s easy-ish.

If you have a pre unit Triumph with a gearbox that’s not behaving you have two choices. You can give it to someone to repair who’ll hold onto it for weeks, charge you a fortune and not solve the problem at all. (This is a surprisingly typical scenario) Your other option is to follow the link to download this article and spend that time figuring it out for yourself and saving a fortune. It’s easier than you think.
You can find the article here Triumph Preunit Gearbox Rebuild Article