Performance supercharger pulley upgrade for the AMG 55 Kompressor motor.  Our tests show 60 to 70 + rear wheel hp and torque gains, while maintaining a safe level of boost and supercharger rpm.  Pulley upgrade offers excellent driveability and does not adversely affect highway mileage. 

Specs:

Increases horsepower and torque

35% lighter than factory pulley, reducing rotational mass

Reduced rotational mass increases supercharger longevity

77 mm diameter

Easy to install

Special coating reduces belt slip

Improved nitride coated clutch, plate and spring design