Ultimate Performance bundle kit, includes, 77mm supercharger pulley, Belt wrap kit with HD GREEN belt and black 5 piece idler kit bundle. The perfect package to add big power and belt wrap kit to help from preventing belt slip and 5 pc idler kit for protecting your ride form the dreaded stock idler pulley failure. Designed to stop the slipping of the belt under boost pressure to maintain maximum boost under full throttle and brace the weak factory double idlers, that are known to fail.

Specs:

• Ultimate Performance 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
• Tune required with all boost increases. Ask for our M113k tunes
• 77 mm in size 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 offhsore)

Belt wrap kit:

• Prevents loss of boost under full throttle , thus increasing power equally across the power band.
• Easier and consistent tuning Increases belt wrap on both crank and supercharger pulleys
• Kit comes with instructions, all hardware, 1 idler pulley and brackets reduces slip and improves boost from 1-2.5 PSI ultra high quality and on the market longer than any other kit.
• on the market for 10 years now!
• Increases tune ability
• Please provide crank pulley size to get correct belt size
• Easy install

The UPD high performance M113K 5 piece idler set will replace ALL your stock plastic/metal double idler pulley assembly, supercharger tensioner pulley, serpentine tensioner idler and serpentine idler 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.

• 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.

Included in kit are obd2 flash cable and simple instructions with tune support. Over 10 years tuning Mercedes AMG M113k engines! Direct flash via the (OBDII) Diagnostic port of your vehicle (8 minutes using Flash cable. After purchase is made and email contact with tune support , please state all mods on the car to get custom tuned. Stock cars can also be tuned.

• Dyno Tested
• Instant power gains
• Better Throttle Response
• Increased Fuel Economy
• Top Speed Governor removed
• Optimized timing and fueling maps
• Flash tune within the comfort of your home and anyplace in the world with web access

Pics shown are of engine for example and picture of ECU (not included) Kit includes 77m supercharger pulley, Custom Tune, belt wrap kit with belt idler pulley and all hardware, plus the coveted 5 piece idler kit that is driven by the HD GREEN supercharger belt and all idlers for serpentine belt too. . All in one big bundle price package! Some pictures show belt wrap kit alone and 5 piece idler alone and installed on engines. Installed engine idler colors may not match color but kit shows the black idlers included.

Fits all years of m113k Kompressor engine, 2003-2008 SL55, E55, CL55, CLS55, S55 and includes G55 wagon from 2005-2011.