Join Date: Mar 2012
Location: Kingman, AZ 86409
Changing the spring out on the secondary clutch requires a special tool, but EPI offers one. A lot of clutch kits do just offer clutch rollers. If I was doing it, I'd try lighter rollers. 650's came with 23 gram rollers (green), if I'm not mistaken. I'd try 21 gram (blue)rollers to start.
red rollers = 19 grams = 6000RPM AC # 0823-164
blue rollers = 21 grams = 5500RPM AC # 0823-167
green rollers = 23 grams = 5000RPM AC # 0823-170
white rollers = 25 grams - 4500RPM AC # 3402-483
grey rollers – 28 grams - AC # 0823-295
black rollers – 33 grams AC # 0823-298
17 gram roller - white - 02/375 - 03+400 - part number: 3402-366
19 gram roller - red - prowler 09+700 - part number: 0823-164
21 gram roller - blue - various H1 engines - part number: 0823-167
23 gram roller - green - Tcat engines - part number: 0823-170
25 gram roller - white - 06+ 500 - part number: 3402-482
25 gram roller - white - 00- 09 500 - part number: 3402-483
28 gram roller - gray - 10/650MP - 11+700mp - 12 WildCat - part number: 0823-295
33 gram roller - black - 10+ Tcat mudpro - part number: 0823-298
These RPM numbers associated with each set of weights is only a close guess. every machine will respond differently depending on altitude, tire size, and power adders. the more power you have, the heavier roller you can run for a faster upshift, and more RPMs. if i were you with that power you have, i would run the reds at the LEAST, and possibly even lighten up a set to get them even lighter. in the dunes to run ballz out, about 17-18 grams is where an H1 motor needs to be, and my stage 2 fixed plate work even helps the shiftout even more. it helps keep the rollers lower in the shiftout range, keeping you in a lower gear longer, but allowing you to build the RPMs you need for power, which allows the engine to rev into the power band, and not upshift too fast and bog the motor down.
2009 700EFI XTX, , AC Winch, 2010 Dust Shield EPI Sport Utility Clutch Kit , Street Legal, Cage chopped 2 ", Aluminum Diamond Plate Trim, Relocated Factory Bladders with covers, 5 Pt. Harness installed, Bed Tiedown System, Scat Pro-Car Seats, Secondary Battery installed, Oil Pressure, Oil/CVT Temperature, Volt Meter & Water Temp Gauges installed with Dash Plate, Bighorns, ITP Black 212 Wheels. Tonneau cover. 750 Big Bore Kit, Web Cam, and Rocker Arms.
Either - Dick or RD