QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 12" Tall - 300 lb. Harland Sharp Comes available with combustion chamber

Comes available with combustion chamber volumes of 58cc or 72cc

5/8-18 Female Inlet

With a patented orifice metering valve and a lightweight check valve disc these High Energy hydraulic flat lifters for AMC 199-258 provide quicker response and better performance

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

547 in Long

QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 12" Tall - 300 lb. Harland Sharp Comes available with combustion chamberPowder 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.