High-performance forged 4340 steel connecting rod designed for Yamaha YZF-R6 2010 13SL EUROPE 1J13S-300E1 models. Precision-engineered to match OEM specifications 13S-11650-01-00 for seamless compatibility. Ultra-durable alloy construction with superior heat treatment enhances engine longevity under extreme conditions. Ideal for professional motorcycle racing, track days, and high-RPM street applications. Advanced forging process ensures optimal weight distribution and fatigue resistance. Direct replacement part with tighter tolerances than stock components. Manufactured using aerospace-grade CNC machining for perfect balance and reduced vibration. Suitable for engine rebuilds, performance upgrades, and competition use. Cost-effective solution for bulk purchasers seeking OEM-quality aftermarket parts.