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Pro Stock Regulator 4-Port
filtered air to the driver for cooling and to help prevent shield fogging
GM TPI Fuel Injection
Helmet Tether
Tension springs and release pull tabs are used on adjusters for security and ease of use
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
