Straightline Performance Polaris RMK / SKS / Assault 850 Low Elevation Boondocking Clutch Kit | 0-3,000 ft | Stock Exhaust

Description

The Straightline Performance Polaris RMK, SKS, and Assault 850 Low Elevation Boondocking Clutch Kit was developed for riders who demand maximum performance in deep snow, technical terrain, and challenging backcountry conditions.

Designed specifically for stock exhaust Polaris 850 RMK, SKS, and Assault models operating from sea level to 3,000 feet elevation, this clutch package delivers the responsiveness, power transfer, and control needed to excel in boondocking environments. Whether you’re sidehilling steep terrain, carving through powder-filled tree lines, or navigating technical backcountry features, this clutch kit is engineered to keep your machine performing at its peak.

At the heart of the package is Straightline Performance’s proven fully adjustable weight system. Designed to provide precise RPM control and exceptional tuning flexibility, the adjustable weights allow riders to fine-tune clutch calibration while maintaining optimal engine performance. The result is stronger acceleration, improved throttle response, and more efficient power transfer throughout the operating range.

The kit also includes a custom-designed helix developed specifically for the Polaris 850 platform and low-elevation mountain riding. Extensive testing in real-world deep snow conditions resulted in a helix profile that improves shift characteristics, enhances belt efficiency, and delivers quick, responsive backshift when conditions demand immediate power.

Two custom-calibrated clutch springs complete the package. Carefully selected to work in conjunction with the weight system and helix, these springs help maintain consistent clutch performance while improving engagement characteristics and overall drivability.

Unlike trail-focused clutch calibrations, this package is designed around deep snow performance. Riders will notice stronger low-end pull, improved maneuverability, more responsive throttle input, and greater control when riding technical terrain. The machine feels more responsive, more predictable, and easier to control in the conditions where mountain riders spend their time.

Every component has been tested as part of a complete system to ensure reliability, consistency, and performance in demanding backcountry conditions. The result is a clutch package that allows your Polaris 850 to perform at its full potential when the snow gets deep and the terrain gets technical.

FEATURES & BENEFITS

• Designed for Polaris RMK, SKS, and Assault 850 models
• Optimized for stock exhaust applications
• Calibrated for 0-3,000 feet elevation
• Purpose-built for boondocking and backcountry riding
• Includes Straightline Performance fully adjustable weight kit
• Custom-designed helix developed for deep snow performance
• Includes two custom-calibrated clutch springs
• Improved throttle response and acceleration
• Faster and more responsive backshift
• Better power transfer and clutch efficiency
• Maintains optimal RPM in deep snow conditions
• Enhanced maneuverability in technical terrain
• Adjustable weight system for changing conditions
• Improved belt performance and drivability
• Extensive real-world mountain testing
• Engineered and tested by Straightline Performance