QA1 Pro Coil High Travel Coil-Over Spring - 3.500" ID 10.0" Length 550 lb/in Spring Rate - Single Pigtail H76203FXS The patented ATI Super Damper

The patented ATI Super Damper is the only damper designed exclusively for high performance Ford engines

Throttle Bore: 90mm

Socket Style

featuring a REM finished surface that reduces wear with a new oiling design to eliminate oil starvation

QA1 Pro Coil High Travel Coil-Over Spring - 3.500" ID 10.0" Length 550 lb/in Spring Rate - Single Pigtail H76203FXS The patented ATI Super DamperAvailable in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of high travel springs with a silver powder coated finish. Made in the USA, these 2" I. D. high travel springs are manufactured from specially designed high tensile, chrome silicon alloy spring wire, which allows them to have fewer coils and a smaller wire diameter. As a result, these springs are lighter and have increased travel due to the larger distance between the coils.