64mm Fixed Supercharger Pulley - Mercedes AMG C32/SLK32 & Chrysler Crossfire SRT6 (2002-2008)

Instant Power Without Compromise

Imagine pressing the accelerator and feeling immediate, unrelenting boost—no hesitation, no clutch slip, just pure supercharged thrust from idle to redline. That's what eliminating the factory clutched pulley delivers. Our fixed 64mm pulley spins the supercharger faster, generating significantly more boost while removing the engagement delay and power-robbing slip that plague the OEM design.

The results speak for themselves: over 40 horsepower and torque gains at the rear wheels with proper tuning and supporting modifications. This isn't peak-only power that disappears in real-world driving—it's usable performance across the entire RPM range. Whether you're merging onto the highway, accelerating through corners, or simply enjoying spirited back-road driving, you'll feel the difference every single time you touch the throttle.

A Decade of Proven Performance

This isn't an untested experiment—it's a proven upgrade that has delivered reliable results for M112k AMG vehicles for over ten years. Countless C32, SLK32, and Crossfire SRT6 owners have trusted this pulley to transform their driving experience, and the results have been consistently impressive. The fixed design eliminates the failure-prone clutch mechanism that wears out and becomes expensive to replace, while simultaneously delivering the instant boost response that makes supercharged engines so special.

The 64mm diameter represents the optimal balance between aggressive power gains and maintaining safe boost levels. We've engineered this pulley to increase supercharger RPM without pushing the Eaton M45 beyond its efficient operating range. The result is substantial power gains while maintaining reliability and excellent driveability—even in daily driving situations.

Smarter Engineering, Better Results

Here's what many enthusiasts don't realize: this 64mm supercharger pulley delivers power gains equivalent to much larger crank pulleys, but with significantly easier installation and far less stress on your engine's crankshaft keyway. Larger crank pulleys can create dangerous harmonics and stress that risk damaging your engine's internals. Our supercharger pulley approach gives you the power without the risk.

The fixed design also eliminates 45% of the rotational mass compared to the factory clutched pulley. Less rotating weight means the supercharger spools faster, responds more eagerly to throttle inputs, and experiences less parasitic drag. This weight reduction actually increases supercharger longevity by reducing bearing stress and heat generation—your performance upgrade also helps your supercharger last longer.

Engineered for Real-World Performance

Power gains matter, but only if you can use them every day. Our pulley upgrade maintains excellent driveability and doesn't adversely affect highway fuel economy. The increased boost is perfectly manageable in traffic, comfortable on long trips, and explosive when you want it. You're not sacrificing daily usability for weekend performance—you're enhancing both.

The special coating on the pulley reduces belt slip even under the increased loads of higher boost levels. The super-tough anodized finish resists wear, corrosion, and heat discoloration, ensuring your pulley looks as good as it performs for years to come. This is precision engineering designed to meet—and exceed—the standards Mercedes-AMG set for these vehicles.

Straightforward Installation

Unlike complex engine modifications that require extensive disassembly, the supercharger pulley upgrade is surprisingly straightforward. With basic tools and mechanical knowledge, you can complete the installation and transform your AMG's performance in an afternoon. The process involves removing the factory pulley and installing this fixed unit—no fabrication, no permanent modifications to your engine.

Many M112k AMG owners have documented their installations online, providing helpful visual guides if you want to see the process beforehand. Whether you tackle it yourself or have your trusted mechanic handle it, this is one of the most cost-effective performance upgrades available for your AMG.

Critical: Professional Tuning Required

Why AMG Enthusiasts Choose This Upgrade

• Proven Results: Over 40 rear-wheel horsepower and torque gains with proper tuning
• Instant Boost Response: No clutch slip, no engagement delay—just immediate power
• Decade of Success: Reliable performance on M112k AMG vehicles for over 10 years
• Significant Weight Reduction: 45% lighter than factory, improving throttle response and longevity
• Optimal Sizing: 64mm diameter balances power with safe boost levels
• Engine Protection: Less stress on crankshaft keyway compared to crank pulley modifications
• Premium Finish: Anodized coating resists wear and corrosion
• Daily Driveable: Maintains excellent driveability and highway fuel economy
• Cost-Effective: Eliminates expensive factory clutch replacement needs

Technical Specifications

Compatible with:
• Mercedes-Benz C32 AMG (2002-2004)
• Mercedes-Benz SLK32 AMG (2002-2004)
• Chrysler Crossfire SRT6 (2005-2008)
• All vehicles with M112k 3.2L Supercharged Engine
Pulley Diameter: 64mm
Design: Fixed (clutchless)
Weight Reduction: 45% lighter than factory
Finish: Anodized coating with anti-slip surface
Power Gains: 40+ RWHP/RWTQ (with tune and supporting mods)
Required: Professional ECU tune mandatory

Your M112k AMG was hand-built by skilled technicians at Affalterbach with "One Man, One Engine" philosophy. Honor that craftsmanship by unleashing its full potential. Upgrade your supercharger pulley today and experience the instant, relentless power your AMG was always capable of delivering.