Swift Springs Standard Conventional Spring - OD: 5" / Length: 20" Spring Rate (lbs/inch):125 2015 BMW 1 Series 135i

2015 BMW 1 Series 135i (F2X LCI 5 Bolt)

2012 Audi R8 V10 (w/o Magnetic Ride)

KW Clubsport 2-Way Coilover Kit for the 2004-2007 Subaru Impreza WRX were developed for customers

S) Height Adjustable Spring Kit for the 2009-2018 Nissan GT-R R35 are a great alternative to conventional lowering springs

Swift Springs Standard Conventional Spring - OD: 5" / Length: 20" Spring Rate (lbs/inch):125 2015 BMW 1 Series 135iSwift Springs Standard Conventional Springs in 5" OD and 20" 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