Premium 133mm Forged Connecting Rods engineered for high-performance Mercedes Benz C63/C63S W205, E63, S63, and GT63 4MATIC models with M177 4.0L engines. Precision-crafted from high-strength forged steel for superior durability under extreme loads. Optimized weight distribution ensures smooth operation and reduced engine stress. Ideal for racing, tuning, or high-demand street applications. Direct-fit design guarantees seamless installation with OEM specifications. Built to withstand turbocharged power upgrades without compromising reliability. Perfect for enthusiasts seeking uncompromising performance and longevity.