QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 750 lbs/in Rate, 10" Length - 1970-1981 Pontiac Firebird WRX STI 7 Kg/mm Spring Rates -

7 Kg/mm Spring Rates - Rear 5 Kg/mm Quantity Full Set (Front & Rear) Note Excludes Cobra and Mach 1 Models Vehicle Fitment

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QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 750 lbs/in Rate, 10" Length - 1970-1981 Pontiac Firebird WRX STI 7 Kg/mm Spring Rates -Available in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of High Travel Springs for the 1970 1981 Pontiac Firebird 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