QA1 Pro Coil High Travel Coil-Over Spring - 2.500" ID 10.0" Length 350 lb/in Spring Rate - Single Pigtail Motor Oil Additive Supercharged combinations with heads

Supercharged combinations with heads

27 mm Reach

4G63/T DSM

Flowmaster's Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers

1970-1986 GMC Jimmy

QA1 Pro Coil High Travel Coil-Over Spring - 2.500" ID 10.0" Length 350 lb/in Spring Rate - Single Pigtail Motor Oil Additive Supercharged combinations with headsAvailable 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.