As an automotive expert, i tested THIS replacement carburetor on my motorcycle and was extremely disappointed with the results. As a result of my tests I determined that this product lacks proper air-fuel ratio regulation, and my bike started running rough and the engine struggled to keep up. The only positive thing about this product was that it was easy to install, but that's about it. Overall, I would not recommend this poorly designed carburetor to anyone looking to replace their motorcycle'See full review