The pipe and muffler will increase the top end 7.5HP and the mid range as much as 11HP. The pipe and muffler combination will result in a 14lb weight savings over the stock pipe and muffler. Clutching will be necessary as the power peaks 200 RPM less then stock. Stock jetting, usually works best. We will be using the stock manifold there is a slight power loss with this pipe and aftermarket manifolds.
