QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 14" Tall - 110 lb. Helmet Support 550" outer diameter while reducing

550" outer diameter while reducing the outer diameter of the valve guide to

OL 270H-10

The POWERBOND STREET / RACE series brings bonded balancer technology within the budget of every performance street engine builder from mild to wild

1400 Series

2011-2013 BMW 335i

QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 14" Tall - 110 lb. Helmet Support 550" outer diameter while reducingPowder Coated, Chrome Appearing Silicon Manganese SteelAll QA1 springs are manufactured using the highest quality chrome silicone. This material offers high strength, consistency and longer life. Cold Wound Heat Treated Shot PeenedAll QA1 springs go through intensive manufacturing processes to ensure consistency, accuracy and durability. Squared EndsAll QA1 springs are ground at both ends to ensure straight, consistent and accurate operation.