Manley Performance Pro Series Connecting Rods for 8-Cyl 4340 or 300M Steel

Manley Performance Pro Series Connecting Rods — 8-Cyl 4340 or 300M Steel Engineered for racers and high-performance builders , the Manley Performance Pro Series connecting rods deliver exceptional strength, precision, and durability for 8-cylinder applications. Available in forged 4340 or vacuum-degassed 300M steel, these rods are built to withstand extreme loads and rpm. Key Features Premium materials: Choose forged 4340 or 300M vacuum-degassed steel for maximum fatigue resistance and toughness. Precision manufacturing: CNC-machined for exact tolerances, consistent weight, and superior balance across all rods. NHRA Legal options: Select I-Beam SKUs are NHRA Legal for Stock and Super Stock classes, meeting strict competition standards. Multiple weight classes: Available in Tour Lites, Lightweights, Standard, and Heavy weights to match rotating assembly and tuning goals. Designed for longevity: Optimized I-beam profile reduces mass while maintaining rigidity for reliable service in high-horsepower engines. Why Choose Manley Pro Series Whether building a street/strip powerplant or a purpose-built racer, Manley Pro Series connecting rods combine race-proven design with workshop-ready fitment. They offer repeatable performance, simplified balancing, and the confidence of a brand trusted by engine builders worldwide. Fitment: 8-cylinder applications — specify rod length and journal dimensions when ordering. Contact your Manley dealer for NHRA legality verification by SKU.