Our S3 recoil clutch kits pack a huge punch! No matter the terrain, they hit hard and just keep pulling for days. On the trail or at the race you'll notice wicked acceleration and instant clutch response when getting back into the throttle after hammering that corner. In the dunes you'll see the same benefits, but also have much less bogging when climbing that big dune. The machine will hold RPM so you can get where you need to go, and get there faster! Going mudding? Our mud setup will help turn those tires through the thick and deep with much better RPM and wheel speed that's key to climbing out of that hole. We have a huge amount of CVT knowledge, a great passion for the sport, and have many hours into testing different setups in the real world. We know you'll be extremely pleased with the performance gain from our clutch kits! The biggest problem with Pro XP clutching is they do not have enough belt grip. When the first Pro XP models arrived they had a soft secondary spring that slipped the belt under full shift. They were then fitted with a stiffer secondary spring and now the problem is they rev too high for good belt grip with that spring. Our kit helps combat this with a stiffer secondary spring over factory for even better belt grip, and the right primary weight/spring to get proper RPM. Our S3 clutch kit includes everything the S2 does, but adds the helix. The helix adds more aggressive shift to the secondary clutch which gives you big acceleration gains and feels more like your throttle is locked to the rear wheels. The Performance helix is the most acceleration gain, while the high load is a little more than stock, but less aggressive for excessively heavy/large tires, crawling, or mud riding.