EPI Performance Mudder Clutch Kit for 2009-10 Polaris Sportsman 550 EFI 4×4 Models – 28+ Tires – WE436813 Inch

EPI Performance Mudder Clutch Kit for 2009–2010 Polaris Sportsman 550 EFI 4×4 (28+ Inch Tires)

Take control of deep mud and oversized tire performance with the EPI Performance Mudder Clutch Kit WE436813, engineered specifically for the 2009–2010 Polaris Sportsman 550 EFI 4×4 running 28 inch and larger tires. Calibrated for elevations between 0–3000 feet, this clutch kit restores lost power and dramatically improves drivability when you upgrade to aggressive mud tire setups.

Larger tires add rotating mass and strain to your drivetrain, often causing sluggish throttle response and excessive belt heat. This mud-specific clutch kit compensates for that added load, delivering stronger low-end torque, easier tire rotation in thick mud, and faster backshift for crisp throttle response when you need it most.

Key Features

• Designed for 28″+ Tires – Optimized clutch calibration for oversized mud tire setups.
• 0–3000 ft Elevation Range – Tuned for low elevation performance.
• Restores Lost Power – Compensates for horsepower reduction caused by heavier tires.
• Easier Turning in Mud – Improves torque delivery to help spin large tires through deep terrain.
• Better Low-End Power & Torque – Stronger launches and improved pulling performance.
• Quicker Backshift – Sharp, responsive throttle engagement.
• Reduced Belt Slip & Clutch Heat – Promotes longer CVT belt life and improved reliability.

Technical Specifications

• Brand: EPI Performance
• Part Number: WE436813
• Application: Mudder Clutch Kit
• Elevation Range: 0–3000 feet
• Tire Compatibility: 28 inch and larger tires
• Fitment: 2009–2010 Polaris Sportsman 550 EFI 4×4

Vehicle Compatibility

• 2009 Polaris Sportsman 550 EFI 4×4
• 2010 Polaris Sportsman 550 EFI 4×4

Why Choose the EPI Mudder Clutch Kit?

Factory clutch settings are not designed for aggressive mud riding or oversized tires. Without proper tuning, your Sportsman can feel underpowered and generate excess clutch heat. The EPI WE436813 Mudder Clutch Kit recalibrates your CVT system to maintain optimal RPM, increase torque output, and improve throttle control in extreme conditions.

If you’re running 28″+ mud tires and want maximum performance, durability, and control in deep terrain, this heavy-duty clutch upgrade delivers the power and responsiveness your Sportsman 550 needs.