The Straightline Performance Polaris RMK, SKS, and Assault 850 Mountain Clutch Kit is specifically calibrated for machines equipped with a Straightline Performance Single Pipe exhaust system and operated at elevations above 6,000 feet. Featuring Straightline's fully adjustable weight system, custom-designed mountain helix, and two performance-calibrated clutch springs, this package delivers stronger acceleration, quicker throttle response, improved backshift, and maximum deep snow performance.

Note: Straightline Performance Single Pipe exhaust system is not included and must be purchased separately.