QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 7" Tall - 450 lb. 2120013 This produces lower air intake

This produces lower air intake temperatures which results in added horsepower and the ability to add more timing advance with less detonation

2007-2013 GMC Sierra 1500 Crew Cab Pickup

Offers tilt and other modern comforts for your muscle car when there were none

Late Model Sport

QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 7" Tall - 450 lb. 2120013 This produces lower air intakeQA1 has engineered a complete line of coil over springs to complement its line of shock absorbers and struts. Each spring has been designed to be as light as possible without sacrificing performance, withstand the loads of today's racing suspensions and outperform the competition at an affordable price. QA1 offers an assortment of high travel springs, available in 7", 9", 10", 12", 14" and 16" lengths, with a silver powder coated finish. These springs