2017-18 Ski-doo Summit Rev Gen 4 850 E-TEC 146”-175″ 6000ft + clutch kit (includes adjustable P-drive weights).

This kit is designed for those who want to ride their Summits at elevation.

The complete performance clutch kit for your specific machine. Our kits are built on extensive in-field testing and then tested on our in-house chassis dyno.

This kit was R&D in The Canadian Rockies and is not an off the shelf Straightline kit.

This was developed for deep snow performance 146-175 and secondary spring choices are available for different track lengths

A complete kit designed to drastically improve acceleration, back-shift while improving top MPH. This is a complete kit ready to bolt in your machine. For those of you who like to tune this kit includes fully adjustable clutch weights allowing you to modify the kit for your riding style.

Kit includes: Primary spring, Secondary spring, Slick shift washer, Custom Straightline Helix, Top gear, Bottom Gear, Adjustable weights and magnets for clutch weight tuning.