Bolt-on performance for aggressive trail riders, lake racers, cross-country racers or radar-run racers who have to be in front of the pack The most aggressive acceleration; reaches top speed quicker without losing dependability Delivers tremendous low-end and mid-range performance increases Improves backshifting characteristics of the factory setup for smooth operation; keeps engine operating at correct rpm to keep power on tap when you need it Kit is tuned to its specific application to ensure uncompromised performance Helix is 7075 T-6 aluminum Clutch springs are made from highest-quality materials utilizing only a 5% tolerance Bushed/balanced weights Use of traction products highly recommended with this product.. CLUTCH KIT PRO POLARIS