SKU: ATI916890K
MPN: 916890K
The ATI Performance Crank Hub & Inner Shell Steel for BBC with 1/4 Keyway is designed for serious big-block Chevrolet builds where reliability and precision are crucial. This component acts as the essential interface between your crankshaft and harmonic balancer, effectively transferring rotational energy while ensuring precise alignment under high RPM conditions.
Constructed from high-quality steel, this ATI hub features a 1/4 inch keyway that secures your harmonic balancer in alignment with the crankshaft. Its inner shell design allows for compatibility with various performance harmonic balancers, while the robust steel material withstands the radial and tangential forces generated during engine operation. The precision-machined surfaces guarantee minimal runout when installed correctly, which is vital for preventing vibration and maintaining accurate ignition timing.
This crank hub is ideal for BBC engine builders and experienced mechanics looking to upgrade from worn OEM components or transition to modern performance harmonic balancers. Proper installation requires careful alignment during crankshaft assembly and adherence to torque specifications for the keyway fastener, ensuring optimal performance and longevity.
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