Crank Hub w/Inner Shell - SBC

The Crank Hub w/Inner Shell - SBC by ATI PERFORMANCE is an essential harmonic balancer component engineered for small-block Chevrolet engines seeking maximum durability and precision crankshaft control. This hub absorbs and dampens harmful vibrations generated during combustion cycles, protecting your crankshaft from premature wear, fatigue, and potential failure. Whether you're building a street engine, a weekend warrior, or preparing a high-revving performance platform, a quality crank hub is non-negotiable for long-term reliability and engine longevity.

ATI's design features an internal elastomer ring contained within the inner shell that isolates destructive torsional harmonics from the crankshaft itself. This dual-mass construction allows the outer inertia ring to oscillate slightly independent of the crank journal, effectively canceling out resonance frequencies that would otherwise cause material stress and micro-cracking. The compact 5.4-inch diameter and lightweight 3.15-pound design maintains engine balance while delivering professional-grade vibration control, making it ideal for both naturally aspirated and boosted applications where crankshaft integrity is paramount.

SBC enthusiasts—from street rod builders to serious engine builders—depend on ATI crank hubs when reliability matters as much as performance. Installation is straightforward on any small-block Chevrolet platform equipped with a standard crankshaft nose, and the hub integrates seamlessly with OEM or aftermarket accessory drives. For anyone running higher RPMs, tighter valve timing, or aggressive fuel mapping, upgrading to ATI's inner-shell design is a smart investment that extends bearing life and ensures your bottom-end stays bulletproof for years of consistent driving.