Hypercoils 12" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 275 lb. 121018 Thermo-Quad adapter

Thermo-Quad adapter

2015-2020 Chevrolet Suburban

1974-1977 Chevrolet Malibu CID 283

For HLY12-802-1 pump

Twin Shoulder Belts Adjust from 25 to 72 inch

Hypercoils 12" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 275 lb. 121018 Thermo-Quad adapterOptimum 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. The results are in and they are simply incredible: More Deflection Less Weight Increased Rate Linearity More Resistance to Bowing Fits All