Allstar Performance SB Chevrolet Aluminum Crankshaft Hub 9210CD Pro Stock Regulator 4-Port

Pro Stock Regulator 4-Port

Helmet Tether

GM TPI Fuel Injection

Dual-Strap handle

features include machined billet aluminum filler necks

Allstar Performance SB Chevrolet Aluminum Crankshaft Hub 9210CD Pro Stock Regulator 4-PortDesigned specifically for circle track racers, this SB Chevy aluminum crank hub is NOT a harmonic damper. Hub is significantly lighter than a harmonic balancer and dramatically reduces rotating weight for quicker acceleration off the turn. Hub has engraved timing marks at 0 and from 30 42, is 4 3 8" in diameter, features (3) 3 8" 16 accessory threads and weighs just one pound. Fits all internally balanced small block Chevy engines. Designed for