Hypercoils 8" OBD Coil-Over Spring - 1-7/8" I.D. - 200 lb. AA0710AG3R54 BMR's S550 upper control arms

BMR's S550 upper control arms add no noticeable NVH

Swivel Expander Fitting 16AN Female to 20AN Male

Chevrolet Powerglide TH350/TH400

Kit includes threaded filter nipple only

8 pass Tube & Fin cooler

Hypercoils 8" OBD Coil-Over Spring - 1-7/8" I.D. - 200 lb. AA0710AG3R54 BMR's S550 upper control armsOptimum 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