QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 600 lbs/in Rate, 10" Length - 1971-1987 Pontiac Bonneville tanabe-df210-lowering-springs 57in) Recommended Adjustment Range -

57in) Recommended Adjustment Range - Rear -30mm to -35mm (-1

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QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 600 lbs/in Rate, 10" Length - 1971-1987 Pontiac Bonneville tanabe-df210-lowering-springs 57in) Recommended Adjustment Range -Available in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of High Travel Springs for the 1971 1987 Pontiac Bonneville 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