Schoenfeld BB Chevy Truck Header 2-1/4" x 4" Fender Well RS004C1809 150-350 lb/in Spring Rate

150-350 lb/in Spring Rate

this SB Chevy aluminum crank hub is NOT a harmonic damper

headers and exhaust systems

2-1/2 in Height

Schoenfeld BB Chevy Truck Header 2-1/4" x 4" Fender Well RS004C1809 150-350 lb/in Spring RateProduct Description: Headers Truck 2. 25 in Primary 4 in Collector Steel Black Paint Big Block Chevy Pair Started in 1974, Schoenfeld is known for custom fabricated headers for all forms of circle track racing. Schoenfeld Headers is the worlds largest manufacturer of circle track headers, but they specialize in a variety of high quality exhaust parts, including turn downs, extensions, tubing bends and elbows, race mufflers, insert mufflers, mandrel