QA1 Pro Coil High Travel Coil-Over Spring - 4.125 in ID - 10 in Length - 550 lb PFM440-884 and/or cast aluminum pans

and/or cast aluminum pans

Contoured venturri inlet offers balanced airflow for increased horsepower

Dash Horizontal

Part Number: 241-278

720 lb/in Spring Rate

QA1 Pro Coil High Travel Coil-Over Spring - 4.125 in ID - 10 in Length - 550 lb PFM440-884 and/or cast aluminum pansAvailable 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.