The Hot Rod Sled Shop clutch kit for the 2019-2021 Polaris 850 is available now. Our kit is calibrated for trail sleds up to 146" track lengths and up to 2.25 " lug heights.. Our kit has much quicker acceleration (3-5) sleds lengths and faster backshift for instant on/off throttle response. We spent a lot of time developing this kit and you will be impressed. Our kit includes primary spring, secondary spring, clutch weights and our custom machined helix. Our kit is available with the standard 10 series weights for a stock engine or HRSS adjustable weights for those intending further mods like pipes, y-pipes, or other power adders. Our helix is a two track version with full progressive angles and can be set for trail riding or to open quicker for lake racing on hardpack. The HRSS 2 track helix requires the smaller TEAM TSS04 rollers on the 2021-22 models. Order separately on this page. Instructions included for model specific setup.