I purchased the above kit in Nov 2008, installed it on a new Honda GX50 from small engine warehouse. I removed the govenor and the engine runs strong. The stage 3 gear box in very noisy. Tried all the lubericants suggested here on the fourm to no avail. I have put the bike aside and am riding my CH-80 until I get a solution to the problem. I can't believe the box will last long making that kind of noise. Has anyone ever used a Stanton gearbox wih centrifugal clutch on a Honda GX 50 frame mount for chain drive. Sounds like they have a fully USA machined gearbox with lifetime warranty. If they want sell it separately, then who manufactures it for them. That comes to another question, I thought people in this business were user friendly to each other, why not sell any part separately? Most people can't afford to buy a a whole new kit every time you want to upgrade something. I guess it all comes down to the bottom line, profits.