K-Motion Premium Valve Springs Product images may differ from actual product appearance. The Overwhelming Choice of Racing Winners! Made from the very best Silicon or H-11 tool steel wire and heat treated and/or stress relieved to the correct Rockwell hardness per application. Every spring is visually checked, then radius ground and depointed for longer spring life. All valve springs are individually pressure checked and boxed with no more than 5 pounds variation per set.

571-K-1000

1.625'' Dia. Double H-11 Valve Springs with Damper, Seat Load: 240lbs @ 1.900'' Open Load: 740lbs @ 1.200'' Coil Bind: 1.090'' Max Lift: .750'' Set of 16 View this item

$265.99 Ships

571-K-1000-1

1.625'' Dia. Double H-11 Valve Springs with Damper, Seat Load: 240lbs @ 1.900'' Open Load: 740lbs @ 1.200'' Coil Bind: 1.090'' Max Lift: .750'' Each View this item

$31.99 Ships

571-K-1000H

1.625'' Dia. Double H-11 Valve Springs with Damper, Seat Load: 265lbs @ 2.000'' Open Load: 825lbs @ 1.200'' Coil Bind: 1.090'' Max Lift: .850'' Set of 16 View this item

$265.99 Ships 02/20/12

571-K-1000H-1

1.625'' Dia. Double H-11 Valve Springs with Damper, Seat Load: 265lbs @ 2.000'' Open Load: 825lbs @ 1.200'' Coil Bind: 1.090'' Max Lift: .850'' Each View this item

$21.99 Ships

571-K-1200

1.625'' Dia. Double H-11 Valve Springs with Damper Seat Load: 260lbs @ 2.000'' Open Load: 880lbs @ 1.250'' Coil Bind: 1.150'' Max Lift: .831'' Set of 16 View this item

$305.99 Ships

571-K-900

1.550'' Dia. Double H-11 Valve Springs with Damper, Seat Load: 240lbs @ 1.850'' Open Load: 645lbs @ 1.150'' Coil Bind: 1.090'' Max Lift: .700'' Set of 16 View this item

$279.99 Ships 02/20/12

571-K-950

1.550'' Dia. Double H-11 Valve Springs with Damper, Seat Load: 245lbs @ 2.000'' Open Load: 690lbs @ 1.300'' Coil Bind: 1.150'' Max Lift: .750'' Set of 16 View this item Fits Applications

$265.99 Ships

571-K-950-1

1.550'' Dia. Double H-11 Valve Springs with Damper, Seat Load: 245lbs @ 2.000'' Open Load: 690lbs @ 1.300'' Coil Bind: 1.150'' Max Lift: .750'' Each View this item

$33.99 Ships 02/21/12

571-K-975

1.550'' Dia. Double M-3000 Valve Spring with Damper, Seat Load: 245lbs @ 2.000'' Seat Load: 600lbs @ 1.300'' Coil Bind: 1.200'' Max Lift: .700'' Set of 16 More info on K Motion K-975

$417.99 Ships 02/21/12

571-K-975H

1.550'' Dia. Double M-3000 Valve Springs, Seat Load: 275lbs @ 2.000'' Open Load: 620lbs @ 1.300'' Coil Bind: 1.200'' Max Lift: .750'' Set of 16 More info on K Motion K-975H

$417.99 Ships 02/21/12

571-K-1100

1.550'' Dia. Double Silicon Valve Springs with Damper, Seat Load: 230lbs @ 1.900'' Open Load: 555lbs @ 1.250'' Coil Bind: 1.150'' Max Lift: .640'' Set of 16 View this item

$129.99 Ships

571-K-800

1.460'' Dia. Silicon Double Valve Spring with Damper, Seat Load: 165lbs @ 1.850'' Open Load: 495lbs @ 1.150'' Coil Bind: 1.085'' Max Lift: .700'' Set of 16 View this item

$93.99 Ships

571-K-750

1.265'' Dia. Single H-11 Valve Springs, Seat Load: 130lbs @ 1.700'' Open Load: 395lbs @ 1.150'' Coil Bind: 1.050'' Max Lift: .610'' Set of 16 View this item Fits Applications

$129.99 Ships

571-K-700

1.265'' Dia. Single Silicon Valve Springs, Seat Load: 120lbs @ 1.700'' Open Load: 375lbs @ 1.150'' Coil Bind: 1.050'' Max Lift: .500'' Set of 16 View this item Fits Applications

$47.99 Ships

571-K-700-1

1.265'' Dia. Single Silicon Valve Spring, Seat Load: 120lbs @ 1.700'' Open Load: 375lbs @ 1.150'' Coil Bind: 1.050'' Max Lift: .500'' Each View this item

$9.99 Ships

571-K-1700

1.650'' Dia. Triple H-11 Valve Springs Seat Load: 360lbs @ 2.000'' Open Load: 880lbs @ 1.250'' Coil Bind: 1.150'' Max Lift: .840'' Set of 16 View this item

$321.99 Ships 02/21/12