QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 450 lbs/in Rate, 10" Length - 1975-1979 Buick Skylark Sierra 1500 HD H&R Street Performance Coilovers for

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QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 450 lbs/in Rate, 10" Length - 1975-1979 Buick Skylark Sierra 1500 HD H&R Street Performance Coilovers forAvailable in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of High Travel Springs for the 1975 1979 Buick Skylark 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