Sorry I didn't make myself clear. It is still stock engine and clutch with the exceptions of the speed restrictors removed and the green cdi wire is clipped and aluminum sprockets for less weight. The stock clutching seems to work ok for the time being, but what I'm wondering is what other people are running. Even better would be what products work and what ones are a waste of time and money. I was looking at a Malossi variator setup but was wanting the opinions of others before I buy something.