Swift Springs Standard Conventional Tight Helix Spring - OD: 5" / Length: 12" Spring Rate (lbs/inch):250 2013 Bmw X5

2013 Bmw X5

2010 Mazda Atenza Sport Wagon 20F

1999 Audi TT Quattro AWD Roadster (8N)

2011 Porsche 911 Carrera 4 / Carrera 4S w/out PASM (997/997 Turbo)

Swift Springs Standard Conventional Tight Helix Spring - OD: 5" / Length: 12" Spring Rate (lbs/inch):250 2013 Bmw X5Swift Springs Standard Conventional Springs in 5" OD and 12" 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. The tight helix winding pattern delivers precise