The performance rebound curve minimizes body roll and prevents a floating feeling
along with the small tire and high horsepower drag race customers
SAE Viscosity Grade (Motor Oil) 20W60
They come pre-assembled with new polyurethane bump stops
consider purchasing a new hardware kit for stock rear-ends or similar designs using a straight through bolt design
Spring, Cr-Si High Travel 2-1/2" Id 10" X 100 Lbs/In. Silver Pwdr Coat 1991-pontiac-firebird-esi6483971 The performance rebound curve minimizesAvailable in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of high travel springs 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 larger distance between the coils.