Reed spacers are intended to pull reed cages out from blocking rear intake transfer port. The Firecat engine design doesn't have an intake boost port on the intake side of engine due to exhaust being directly above intake. Reed spacers work well on ZR8 and 9s due to reed cage partially blocking rear intake boost port. Hope this info is useful.
A forum community dedicated to snowmobile owners and enthusiasts. Come join the discussion about performance, trails, riding tips, modifications, classifieds, accessories, troubleshooting, maintenance, and more!