QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 10" Tall - 500 lb. 29002BK Holley Street Avenger Model 4150

Holley Street Avenger Model 4150 Carburetor

Holley is proud to introduce the all new Holley Mighty Mite(TM) electric fuel pumps

Bellhousing Idler Gear

able to handle 7-26 GPM Dual Springs expand operating pressure range while maintaining a low profile and reduced weight

QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 10" Tall - 500 lb. 29002BK Holley Street Avenger Model 4150Powder 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.