Mercedes AMG M113K UPD 83mm Supercharger Pulley (2003 - 2011)

Fits 2003 - 2007 and 2005-2011 G55 AMG Mercedes 55K Models  E55, CLS55, CL55, S55, G55, SL55  The patented and original Ultimate Performance supercharger pulley upgrade for the AMG 55 Kompressor motor.  Our tests show 45- 50 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 83.7mm diameter Easy to install Special coating reduces belt slip Improved nitride coated clutch, plate and spring design Tune will be needed for this pulley, as fuel and power increases will exceed factory tune parameters. Email for your tunes needs to Sales@ultimatepd.com