HOT ROD SLED SHOP INC. POLARIS 800 CLUTCH KIT FOR 2015-2018 121-137" MODELS UP TO 1.5" TRACK. THIS KIT GETS RID OF THE SPONGY ENGAGEMENT AND LAZY PULL OF THE STOCK SLED WHILE MAINTAINING BIG MPH UP TOP. This kit engages firmly and upshifts hard for a really nice acceleration gain and keeps pulling hard to full shift. Backshift is also better when your on and off the throttle for better corner to corner response. The kit includes primary spring, secondary spring, 3 weights, and HRSS helix with 2 different settings.