QA1 High Travel Coil-Over Spring - 2.500" ID - 12.000" Length - 150 lb/in Spring Rate - Black Powder Coat E3 Spark Plugs Etched foil design distributes heat

Etched foil design distributes heat evenly

It is more precise than the more common 'aircore' instruments whose accuracy can be affected by the windings

Chevy Corvette 2005-08

1/4 in Offset

QA1 High Travel Coil-Over Spring - 2.500" ID - 12.000" Length - 150 lb/in Spring Rate - Black Powder Coat E3 Spark Plugs Etched foil design distributes heatQA1 offers an assortment of high travel springs with a black 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. These lighter springs reduce unsprung weight and