Ultimate Performance 88mm supercharger pulley upgrade for the AMG 55 Kompressor motor. This is a great Heavy duty clutched supercharger pulley to replace factory supercharger pulleys that fail for much less that buying the OEM unit.  Better bearings, springs and billet parts than OEM    

Great replacement power SC pulley for the OEM units that fail, for 1/3 the price! NO tune needed and will give a little bump to HP , since it is 35% lighter and 2mm smaller that OEM.  

Fits 2003 - 2008 AMG Mercedes M113k,.  55K Models and 2005-2011 M113k G55 models

The patented and original Ultimate Performance supercharger pulley upgrade for the AMG 55 Kompressor motor.  

Specs:

Slightly Increases horsepower and torque and no tune needed. 

35% lighter than factory pulley, reducing rotational mass

Reduced rotational mass increases supercharger longevity

88 mm diameter VS stock 90m.  

Easy to install

Special coating reduces belt slip

Improved nitride coated clutch, plate and spring design


88 mm in size 

Weight: 3lbs (one pound less than stock 3.5) ~28.5% reduction in weight

Made in USA by UPD (not offshore)