Limited edition Gold anodized 77mm and 3 piece idler kit bundle!

Ultimate Performance Gold 77mm 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.

Fits 2003 - 2007 AMG Mercedes 55K Models

The patented and original Ultimate Performance supercharger pulley upgrade for the AMG 55 Kompressor motor. Our tests show 60-70+ 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
• 77 mm in size supplied with the kit
• up to 3+ psi increase with tune (as compared to a stock supercharger pulley)
• Weight: 2.5lbs (one pound less than stock 3.5) ~28.5% reduction in weight
• Equates to 180mm crank pulley in power but much less rotating mass!
• Made in USA by UPD (not offshore)

Plus UPD Gold three piece idler kit bundled with 77mm supercharger pulley for the ultimate in power and engine show off color!

The UPD high performance M113K 3 piece idler set will replace your stock plastic double idler pulley assemble and tensioner pulley with a high quality CNC billet aluminum machined performance pulley set. High quality Nachi bearings are used and only double bearings seals are used to protect bearings from heat and dirt. All our billet performance idlers have a ultra hard anodized coating. Our leading AMG Mercedes idler designs have been on the market since 2009 and installed on thousands of AMG cars!

• CNC billet aluminum with hard anodized coating
• ZZ rated high speed Nachi bearings
• Smooth and quiet running
• Easy install
• Made in USA and highest quality available

Replace your idlers with UPD`s performance idler set today, as the stock AMG plastic idler`s, with rubber bearing seals,are known to fail from the high heat and dirty conditions under the hood. Replaces 1132020419, A1132020419, A 113 202 04 19

Also fits G55 Wagon with M113k -2004-2011

Special long slotted design is used to help improve cooling, reduce weight (less weight also reduces bearing stress), and reduce noise and centrifugal friction. Ultra hard coated anodized!