I run Jerry's 9 plate Kevlar Barnett clutch with 85-86 250 springs and a pro taper profile clutch perch and lever. My clutch pull is lighter then my dad's stock kfx400 clutch pull and Jerry has tested his 9 plate setup to hold over 70lbft of torque without slipping. This is all in a 500 btw don't try putting 9 plates in a two fiddy or you'll shoot your eye out kid!