The well proven 60.5mm fixed (clutchless) pulley over the last 10 years for the M112k AMG vehicles will save you money over replacing the OEM clutched style. Instant power and no clutch slip.  This pulley is equal to more than many larger crank pulley`s in HP/TQ but much easier to install and less stress on the crank key way. Over 40 hp and  Torque gains with tune and supporting mods and Tune!  

2002-2008 M112k Mercedes-Benz AMG C32 SLK32 Crossfire SRT6 Fixed 64mm Supercharger Pulley

Ultimate Performance fixed supercharger pulley upgrade for the AMG m112k  Kompressor motor.  Our tests show 40hp 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. Removes oem clutch and reduces weight. Tune is needed to adjust for high boost, fuel and timing.   No more clutch slip and instant power at will!   ***Tune is required with all smaller pulley`s, as boost is increased. 

Specs:

Increases horsepower and torque.

Instant boost!

45% lighter than factory pulley, reducing rotational mass

Reduced rotational mass increases supercharger longevity

60.5 mm diameter

Easy to install

Special coating reduces belt slip

Super tough anodized coated design.