76mm Clutched Supercharger Pulley Upgrade – Mercedes AMG M113K

Unlock more horsepower and torque from your supercharged AMG with this precision-machined 76mm clutched pulley upgrade. Designed specifically for the M113K platform, this upgrade improves boost response and belt longevity while adding serious power gains.

Proven Performance Gains

Our tests have shown gains of 50–55 rear-wheel horsepower and torque while maintaining a safe level of boost and supercharger RPM. This pulley upgrade offers excellent drivability and does not negatively affect highway fuel economy. By reducing rotational mass, it also contributes to increased supercharger longevity over time.

Note: ECU tuning is strongly recommended to fully take advantage of the increased boost potential.

Why Upgrade to a 76mm Clutched Pulley?

• More Boost, More Power: Smaller 76mm diameter increases supercharger RPM, improving low-end and mid-range torque.
• Clutched Design: Reduces belt slip and strain at idle, improves drivability, and extends belt and bearing life under boost.
• Precision Fitment: CNC-machined from billet aluminum for perfect balance and durability under load.
• Track-Tested: Proven upgrade for both street and strip — ideal for supporting mods like heat exchangers and tunes.

Vehicle Fitment:

This pulley fits all Mercedes-Benz AMG models equipped with the supercharged 5.4L V8 M113K engine:

• Mercedes-Benz AMG E55
• Mercedes-Benz AMG SL55
• Mercedes-Benz AMG CL55
• Mercedes-Benz AMG S55
• Mercedes-Benz AMG CLS55
• Mercedes-Benz AMG G55

Specifications:

• Outer Diameter: 76mm
• Material: Billet 6061-T6 Aluminum
• Finish: Anodized Black or Silver (depending on stock)
• Design: Spring-loaded clutch hub for reduced parasitic drag
• Includes: Pulley assembly only (idler and belt sold separately)

Recommended With:

• Upgraded Heat Exchanger
• Longer Belt (required for proper tension)
• ECU Tune to maximize boost efficiency

Bolt on serious power, reliability, and response — upgrade your AMG’s supercharger with this 76mm clutched pulley today.