QA1 High Travel Coil-Over Spring - 2.500" ID - 10.000" Length - 300 lb/in Spring Rate - Black Powder Coat 1130203 In the mid 80's Boyce

In the mid 80's Boyce developed a complete oval exhaust system for competition use by NASCAR teams

instantaneously transferring power to the rear wheels

adjustable by 10 RPM increments to optimize use of your engine's power band and improve vehicle run performance

Gauges show actual front and rear line pressure for making brake bias changes before or during the race

1957-1957 Chevrolet Sedan Delivery

QA1 High Travel Coil-Over Spring - 2.500" ID - 10.000" Length - 300 lb/in Spring Rate - Black Powder Coat 1130203 In the mid 80's BoyceQA1 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