Hypercoils 14" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 185 lb. 34013R the fastener experts at ARP

the fastener experts at ARP have developed the Pro Series ring gear bolts

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Hypercoils 14" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 185 lb. 34013R the fastener experts at ARPOptimum 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