Optimum Body Diameter (OBD) Hypercoils feature a unique design concept that adjusts the body diameter of the spring relative to the end coils
improving durability
Whether you're running a flat tappet or roller cam in your drag race
Unique brackets are a must when clamping completely around tubing isn’t possible
Includes two zinc-plated adapters for 14mm and 18mm plug sizes - Replacement Part: #MOR97500 Gauge Head
QA1 5Q Series Twintube Shock - 7 in Long - C6-R4 Valve - Black Zinc Motor Oil Optimum Body Diameter (OBD) HypercoilsQA1 5Q Series Circle Track Rebuildable Steel Twin Tube ShocksQA1 specializes in high performance suspension components, including shock absorbers, rod ends, spherical bearings, struts, springs, ball joints and other related items. With products to fit a wide variety of applications, they have solutions for the circle track, drag racing, street performance, and street rodding markets. At QA1, we believe vehicles were meant to be driven. From bolt on