I've bought several BGF HT kits and have been lucky but not so with the rear friction drive ($189.95 shipped free). The unit failed within a few miles. Basically, the drive roller bearing opposite the engine is ruined IMO because the alignment was off and the shaft was forced in causing a slightly bent shaft as well. The front mounting bracket and backer bar were not drilled precisely and the clamp down mechanism deflects the mount so instead of trying to repair it I'll just buy the BMP unit when they're back in stock. The engine and throttle,etc. are OK. I wouldn't recommend this kit.