EPI Performance Mudder Clutch Kit for 2009 Polaris RZR 800 S 4×4 – 28”+ Tires

EPI Mudder Clutch Kit for 2009 Polaris RZR 800 S 4×4 – 28”+ Tires (Full Exhaust Equipped)

Build your 2009 Polaris RZR 800 S 4×4 into a true mud machine with the EPI Performance Mudder Clutch Kit, engineered specifically for models running 28-inch and larger tires at 0–3000 feet elevation. This kit is calibrated for machines equipped with a full exhaust system and EFI controller, ensuring proper clutch performance for modified setups.

Oversized 28”+ mud tires significantly increase rotating mass and drivetrain load. When combined with performance exhaust and EFI tuning upgrades, proper clutch calibration becomes critical to maintain peak power RPM and drivability. This EPI Mudder Clutch Kit restores lost performance while improving torque delivery and throttle response in deep mud conditions.

Key Features

• Designed for 28”+ Tires – Optimized for oversized mud tire applications.
• Calibrated for Full Exhaust & EFI Controller – Engineered for modified RZR 800 S setups.
• Low Elevation Setup (0–3000 ft) – Tuned for strong low-altitude performance.
• Restores Lost Power – Compensates for added tire weight and drivetrain load.
• Improved Low-End Torque – Stronger launch power in heavy mud.
• Easier Turning in Mud – Enhances control and responsiveness in thick terrain.
• Quicker Backshift – Delivers crisp throttle response under acceleration.
• Reduced Belt Slip – Minimizes clutch heat and extends belt life.

Technical Specifications

• Brand: EPI Performance
• Vehicle Fitment: 2009 Polaris RZR 800 S 4×4 (Full Exhaust & EFI Equipped)
• Elevation Range: 0–3000 feet
• Tire Compatibility: 28 inch and larger tires
• Application Type: Mud riding / extreme off-road use
• Note: Clutch kit components may vary from photo

Why Upgrade for 28”+ Mud Tires with Performance Mods?

Running oversized mud tires on a modified engine without recalibrating your clutch system can lead to sluggish acceleration, poor throttle response, and excessive belt wear. The EPI Mudder Clutch Kit maintains optimal RPM under heavy load, ensuring efficient torque transfer and improved drivability.

The result is stronger acceleration, smoother engagement, cooler clutch operation, and enhanced durability — making it an essential upgrade for serious mud riders running performance exhaust systems.