Mercedes Supercharger Tuning Pulley M271 M65 – Performance Upgrade up to +30 HP

The M65 tuning pulley is a high-quality performance upgrade for Mercedes-Benz vehicles equipped with the M271 1.8L supercharged engine. The modified pulley ratio increases the supercharger speed, delivers more air mass into the combustion chamber, and provides noticeably stronger throttle response. The car feels more lively, powerful and agile – without losing daily drivability.

Product Features

• Compatible models: Mercedes-Benz with M271 1.8L supercharged engine (C-Class, SLK, CLK, E-Class etc.)
• Power gain: up to +30 HP and +40 Nm with proper ECU tuning
• Original 6PK belt can be reused
• Surface options: stainless steel or black powder-coated OEM look
• OEM-style appearance – ideal for discreet upgrades
• Designed for performance-focused everyday use

Performance Benefits

The smaller pulley increases the supercharger’s rotational speed and boosts air pressure, resulting in stronger mid-range torque and faster response.

With ECU calibration, power gains of up to 30 HP are achievable.

Quality & Precision

CNC Manufacturing

The M65 pulley is CNC-machined to ensure:

• Exact tolerances
• Perfect concentricity
• Minimal imbalance
• Precise fitment to the supercharger

Stainless Steel Construction

Made from heat-resistant, corrosion-proof stainless steel.

• High structural strength at high RPM
• No fatigue under thermal stress
• Corrosion protection
• Long-term durability for sport driving or track use

Design & Installation Notice

The dual-piece quick-fit system ensures a secure connection to the supercharger and maintains play-free performance even under continuous load.

Important: A puller tool is required to remove the original supercharger pulley. The OEM pulley will be damaged in the process. This upgrade is not reversible.

Surface Options

• Black powder-coated – OEM-style appearance
• Stainless steel – technical and sporty look

Scope of Delivery

• M65 performance pulley
• Centering bolt with pre-assembled quick-locking mechanism

Software & Thermal Notes

Due to increased boost pressure, ECU tuning is strongly recommended. Proper calibration ensures maximum performance and protects the engine and fuel system.

Actual power gains depend on engine condition, maintenance status and thermal environment. Vehicles with upgraded intercoolers typically perform even better.

Daily Use

With proper tuning, the system operates reliably in everyday driving. No additional thermal stress or mechanical engine modifications are required.

FAQ

Can I reuse the factory belt?
Yes. The 6PK OEM belt is compatible.

Do I need additional tools?
Yes. A puller tool is required to remove the original supercharger pulley.

Is ECU tuning required?
Strongly recommended for optimal performance and engine protection.

Can this upgrade be reversed?
No. The OEM pulley is destroyed during removal. The upgrade is not reversible.

Do I need to modify the intercooler?
No upgrades are necessary. For maximum performance, a larger intercooler may be beneficial.

Conclusion

The M65 performance pulley unlocks the true potential of the M271 supercharged engine. More power, sharper throttle response and robust stainless steel engineering – the perfect choice for performance enthusiasts and ambitious daily drivers.