QA1 High Travel Coil-Over Spring Coil-Over 2.500" ID 12.0" Length - 220 lb/in Spring Rate Frankenstein Engine Dynamics 200R4 / TH400 Short Tail

200R4 / TH400 Short Tail / 4L80E / 4L85E

Available for 5x5 and Wide 5 hubs

Quicksilver

Super Seal

Adaptive voltage feature prevents overdriving the ignition coil

QA1 High Travel Coil-Over Spring Coil-Over 2.500" ID 12.0" Length - 220 lb/in Spring Rate Frankenstein Engine Dynamics 200R4 / TH400 Short TailAvailable 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.