Check the listing for details. Evolution Powersports EVO Shift-Tek Clutch Kit Polaris RZR Pro XP. Condition: New. Listed at 349.95 USD. EVOLUTION POWERSPORTS - Shift-Tek Clutch Kit Fitment: Polaris RZR Pro XP DESCRIPTION: The Pro XP is the first Polaris vehicle to have the coveted EVP Shift-Tek advanced clutching components built for it. Our adjustable “notched” weights can handle all power levels from Stage 1 all the way through X85 tunes! The notch in the weights raises the rpm to approximately 2300 rpms with the stock primary spring which is ideal for our launch control tunes. Additionally, our improved weight ramp angle improves acceleration and overall clutch performance. Need a higher engagement? The EVP Shift-Tek silver spring, in conjunction with the notched weights will raise the RPM’s to about 2600. If you don’t want to purchase our clutch kit, which we do not recommend, our Shift-Tek silver spring will raise the RPM’s high enough to use launch control by itself with stock clutch weights. About UsATV Galaxy is an authorized Evolution Powersports Dealer located in Irvine California. Please feel free to contact us anytime with questions or tech help. We are open Monday-Thursday 8-5 PM, Fridays 8-3:30 PM Listing and template services provided by inkFrog