Raised intake D port floor alum shoes and teflon heat insulating gaskets (2 ea) for increasing flow and performance for 850 RH4, Combat and all 32mm port heads

This shape is taken from the world famous Harley XR 750 flat tracker. The intake port floor is raised for increased velocity and flow, allowing for a fuller intake charge. The biggest performance bang for the buck you can get for your Norton. Made of alum. An easy drop in kit.  Two reusable teflon heat insulating gaskets included (more images) (installation instructions).