QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 10" Tall - 100 lb. 6100BK Drive Stud

Drive Stud

to develop a new generation of premium quality valve springs for aggressive valve train combinations

See 5622 for LS7 Cam Change Kit

Holley HP Billet Regulators

QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 10" Tall - 100 lb. 6100BK Drive StudPowder 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.