need help on clutching my 900 fusion for 660' drag race on hard pack snow. right now it has 11 72 wieghts and a blue/white spring. sec has stock helix and a blue red spring.gearing is 24/40 i think.tops out at 99 mphs and 7650 rpm.slp pipe combo
A forum community dedicated to snowmobile owners and enthusiasts. Come join the discussion about performance, troubleshooting, trails, maintenance, riding tips, modifications, classifieds, accessories, and more!