QA1 High Travel Coil-Over Spring Coil-Over 2.500" ID 7.0" Length - 250 lb/in Spring Rate 52100 X-TREME Exhaust Equalizer Systems use

X-TREME Exhaust Equalizer Systems use a hand welded X-Junction to dramatically improve the performance of your Mustang

1960-1974 Ford F-100

flows in excess of 4500 lbs/hr

GM Dexron II

Exceeds Manufacturers Engine Warranty Requirements

QA1 High Travel Coil-Over Spring Coil-Over 2.500" ID 7.0" Length - 250 lb/in Spring Rate 52100 X-TREME Exhaust Equalizer Systems useQA1 offers an assortment of high travel springs, available in 7", 9", 10", 12", 14" and 16" lengths, with a silver powder coated finish. These springs are lighter and have increased travel due to the larger distance between the coils. 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. These