Not alot, maybe a clutch kit. That will make a big difference. you may be able to cut the heads to bump compression, not sure on that tho. I dont think anyone has a pipe for that. so probably just diy mods, oh, gut the airbox will help a bit too....
A forum community dedicated to all snowmobile owners and enthusiasts. Come join the discussion about performance, trails, riding tips, modifications, troubleshooting, maintenance, and more!