I convert the Bully 3 disk jackshaft clutch's to 4 disks., using all Bully parts, been doing them for around 6 or 7 years, still using the original ones I converted., can be run on mild 100cc engines all the way up to my cr250 engines.. there is such a wide amount of adjustability., obviously they last longer the milder the engine..
I've tried the Birky, and liked it real well, except for rebuild time, parts are a bit costly.. I also had a issue with melting belts when ran off the cogs on the clutch, I didn't have any problems when running the bigger pulley and 25t driver..
I've tried the Birky, and liked it real well, except for rebuild time, parts are a bit costly.. I also had a issue with melting belts when ran off the cogs on the clutch, I didn't have any problems when running the bigger pulley and 25t driver..