QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 750 lbs/in Rate, 10" Length - 1971-1973 Buick Centurion E85 Every kit is extensively tested

Every kit is extensively tested on the ZC31S chassis and refined until it balances ride quality with performance — the reason Swift Sport coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide

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QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 750 lbs/in Rate, 10" Length - 1971-1973 Buick Centurion E85 Every kit is extensively testedAvailable in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of High Travel Springs for the 1971 1973 Buick Centurion 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