QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 12" Tall - 300 lb. Harland Sharp The Launch Control also features

The Launch Control also features two other rpm limits

547 in Long

automatically adjust to your performance needs and never experiences fade due to aeration

For vehicles with electronic control (ETC) systems

QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 12" Tall - 300 lb. Harland Sharp The Launch Control also featuresPowder 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.