Hypercoils 7" OBD Coil-Over Spring - 2-1/2" I.D. - 100 lb. 911012 3/8 in NPT Male to

3/8 in NPT Male to 1/2 in Hose Barb

and 3/8-16 thread size

ARP moly lube ONLY

Anodized for durability

Hypercoils 7" OBD Coil-Over Spring - 2-1/2" I.D. - 100 lb. 911012 3/8 in NPT Male toOptimum Body Diameter (OBD) Hypercoils feature a unique design concept that adjusts the body diameter of the spring relative to the end coils. The OBD design enables Hyperco to take full advantage of its ultra high tensile material by optimizing the applied stress through adjusting the spring's body diameter. HYPERCOILS because the most important race is the one you are in. Hyperco is a supplier of precision engineered, high performance suspension