Fix the Chirp. Increase the Power. Save Money.

Is your factory supercharger pulley making noise, wobbling, or failing? The stock AMG electromagnetic clutch pulley is notorious for bearing failure and high replacement costs. The Ultimate Performance 88mm Pulley is the definitive heavy-duty solution.

Engineered with superior billet components and upgraded bearings, this pulley is 35% lighter and 2mm smaller than stock. It provides a natural reliability upgrade while offering a slight bump in horsepower and torque—without requiring a software tune or a new belt.

Key Features & Benefits

• ✓ Heavy-Duty Construction: Built with higher-grade springs, bearings, and billet parts to outlast the failure-prone OEM unit.
• ✓ Value: Superior durability for 1/3 the price of a dealer replacement.
• ✓ Performance Boost: At 88mm (vs. ~90mm stock), it provides a modest power increase by spinning the supercharger slightly faster.
• ✓ No Tune Required: Safe to bolt on and drive immediately.
• ✓ Longevity: Weighs 35% less than the factory steel pulley, reducing parasitic drag and rotational mass.
• ✓ Plug & Play: Uses your original OEM belt and mounting hardware.

Technical Specifications

Verified Vehicle Fitment Guide