Eibach XT Barrel Coil-Over Spring - 2.5 in ID - 12 in Length - 125 lb Semi-Synthetic Motor Oil The plenum adapter (PN 300-231)

The plenum adapter (PN 300-231) will accept all of the popular Holley Hi-Ram plenum tops as a foundation for custom induction systems

Allows The Use Of Metering Jets

150lb/inch front linear spring rate

1954-1966 Oldsmobile Starfire

24-1/2 in Long

Eibach XT Barrel Coil-Over Spring - 2.5 in ID - 12 in Length - 125 lb Semi-Synthetic Motor Oil The plenum adapter (PN 300-231)Eibach ERS 12. 00 in. Length x 2. 50 in. ID XT Barrel (Extreme Travel) Spring Product Description: Coil Spring XT Barrel Coil Over 2. 5 in ID 12 in Length 125 lb in Spring Rate Steel Red Powder Coat Eibach has been committed to creating the finest race springs in the world for over two decades. Eibach products are created to meet the extreme requirements of racing from Le Mans to Daytona. Eibach produces the finest racecar springs in the world.