Not sure but belive its either 65 or 70 on the rear I believe there have been different due to model. I tried to find some parts to underdirve my 05 Pit but had no luck. Nothing standard would fit the dawg and was going to have to have some thing custom made. Front sprocket has a different offset I belive than other makes. Also tried to get a 1 tooth lower engine sprocket. Talked to Baker but they said it would alos require a special made sprocket and chain. Newer models ahve a compensator sprocket on the engine and that would could open some possiblities due to several different size compensator sprockets available. Would also have to have the primary cover for the compensator style spockets. Couple of folks on here have converted to chain drive maybe they will post up. If this is what you're tryin to do.
V.