4330 Forged Steel Connecting Rod 6.000-inch Length

The Callies Ultra XD connecting rods represent a robust solution for high-performance Small Block Chevy engine builds. Crafted from forged 4330 steel, these H-beam rods are engineered for durability and reliability under aggressive power levels. Featuring a 6.000-inch length and a 2.100-inch rod journal diameter, the Ultra XD series is designed with a unique, patent-pending configuration. This design specifically targets increased cam-to-rod clearance, making them ideal for long-stroke racing engines. The proprietary steel is sourced from Timken and is precisely formulated to Callies' exact specifications. Each set includes 7/16-inch cap screws and is intended for use in Small Block Chevy applications. The Ultra XD rods offer the structural integrity required for significant horsepower while maintaining the critical weight characteristics necessary for high-RPM operation.