I dont think the roller helped any on acceleration. I also have the machined clutch but again I dont see much of an improvement other than topend and smoother operation, although it does come of the line better. I have a flat spot around 30 mph when i hit the throttle now, didnt have it before i had the clutch done, but i also changed springs, so some more testing needs done. But im very happy on my drag race results. BTW, im also running stock carbs.
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