SBC Crank Hub w/Remvable Extension

The SBC Crank Hub with Removable Extension by ATI Performance is specifically designed for small-block Chevrolet builders who demand reliable, precision-balanced rotating assembly components. This hub serves as the critical interface between your harmonic balancer and crankshaft, directly affecting engine longevity and performance consistency. Whether you're building a street engine, bracket racer, or high-rpm performance platform, this hub is engineered to meet your needs.

ATI Performance has crafted this crank hub with precision machining to ensure concentricity tolerances that protect against vibration-induced crankshaft stress and bearing wear. The removable extension design provides flexibility for different dampening strategies and installation configurations without requiring multiple hub purchases. Weighing just 2.85 pounds, the compact 5.4 x 4.7 x 5.4-inch design maintains a low reciprocating mass profile critical for high-rpm applications.

This hub is ideal for SBC engine platforms spanning 262 to 406 cubic inches and is compatible with ATI Dampers, OEM, and Stroker Assemblies. Its machined finish and hardened mounting surfaces resist fretting corrosion at the crankshaft interface, making it suitable for forced-induction or nitrous builds operating at elevated cylinder pressures. The SBC Crank Hub offers tuning flexibility without sacrificing structural integrity, ensuring optimal performance.