KWI Clutching - Polaris RZR Pro R / RZR 4 Pro R / RZR Pro R Boost / RZR 4 Pro R Boost Fusion Pro R Primary Clutch

The Fusion Pro R by KWI is the direct evolution of the proven UltraShift Pro R — built on the same aerospace-grade pedigree, refined by the riders who pushed it hardest. Features include more aggressive power delivery, different weight profiles, a quieter clutch, and longer belt life.

Key Features:

• Redesigned moveable sheave with wider weight pockets and increased weight support for broader tuning range
• Sidewinder weights and Sidewinder rollers deliver smoother, more consistent engagement under hard throttle
• RPM adjustability without requiring weight removal — faster set screw adjustment in the field or pits
• Reinforced slider shoes for sustained hard use
• Lighter base spring loads reduce drivetrain stress and extend belt life
• Groovix cooling technology manages heat to maintain grip and performance
• Compatible with 2022+ Polaris RZR Pro R and RZR Pro R 4
• Engineered for stock power and boosted applications with turbo or supercharger