I assume your talking about an 08 model. Without changing the CDI it will never do more than about 48-49 stock speedo. CDI should get about 56 (speedo), a machined clutch plate or simple and cheap double washer method will get a good 5-7 mph. I have a vdi, no exhaust tip and two washers between the cover plate and clutch at each bolt and mine will do 63 on speedo. Now on my 840 teryx, it will do 72, but im working on more and it gets there real quick!!
08' Teryx LE, FST 840, Muzzys, VDI, Dalton, VFJ Roller, Thunderhawk Performance Race Cage, Bumpers, Door Bars and Bracing, Beard TSX Seats, 5pt. Crow Harness, 12" ITP Type 7 Beadlocks, GBC 8 ply Dirt Commanders, Pro Armor Skids, Team Green Plastic
08' Teryx, Maier Orange Plastic, Thuderhawk Performance 4 Seat Cage, Bumpers, Door Bars and Bracing, Beard TSX Seats, 4 pt. Harness, 14" Chrome Doughas Diablos w/GBC Grim Reapers, VDI, Dalton