Mercedes AMG M113K 77mm Supercharger Pulley And Tune Combo.

Fits E55, CLS55, CL55, S55, SL55, G55! Bundle and save big time!!! 77mm supercharger pulley tune upgrade offers excellent drivability and does not adversely drivability or MPG or boost level and supercharger RPM. Kit includes a flash tune cable and customized for your current modifications. Ultimate Performance supercharger pulley upgrade for the AMG 55 Kompressor motor. Our tests show 65 + 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. Great replacement power SC pulley for the OEM units that fail, for 1/3 the price!Fits 2003 - 2007 AMG Mercedes 55K ModelsFits 2005-2011 G Wagon G55 The patented and original Ultimate Performance supercharger pulley upgrade for the AMG 55 Kompressor motor. Our tests show 50 plus 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 83 mm diameter Easy to install Special coating reduces belt slip Improved nitride coated clutch, plate and spring design 77 mm in size and 1 x shim supplied with the kit up to 3+ psi increase with tune (as compared to a stock supercharger pulley) Weight: 3lbs (one pound less than stock 3.5) ~28.5% reduction in weightEquates to 180mm crank pulley in power but much less rotating mass! Made in USA by UPD (not offshore)   **Note all sales of tunes are final and non returnable