Swift Springs Standard Conventional Spring - OD: 5" / Length: 6" whiteline-differential-mount-bushing Yellow Speed Racing Dynamic Pro

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Swift Springs Standard Conventional Spring - OD: 5" / Length: 6" whiteline-differential-mount-bushing Yellow Speed Racing Dynamic ProSwift Springs Standard Conventional Springs in 5" OD and 6" length are purpose built for competitive oval track, stock car, and circle track racing applications. These 5" OD Swift race springs are manufactured in Japan from proprietary H5S. TW high tensile alloy steel, delivering measurably better traction, weight transfer, and tire temperature consistency compared to standard silicone chrome springs. With fewer coils and optimized winding, Swift