Team Reeds TR1972 clutch kit for 2017-2024 Ski-Doo Gen 4 & Gen 5 850 ETEC models. Works great for trail & lake riding with the Jaws 850 ETEC single pipe kit! Primary kit includes easily adjustable P-drive ramps and hardware, primary spring and upgraded spring cup $529. Dalton helix (for optimal performance) $148. Secondary spring (Backcountry models only) $54. 2017-26 850ETEC (MXZ/Renegade) with 129″-137″ and Jaws single pipe use 48/42 helix. 2017-26 850ETEC (Backcountry) with 146″ and Jaws single pipe use 46/42 helix, and require secondary spring change. Can be run with the stock belt or G-BOOST DBSD383EX belt. For on/off trail, low/high elevation riding with 146″ or longer track and Jaws single pipe, please click here for SHR kit.