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Signature Series Dual Valve Springs

Signature Series Valve Springs are manufactured using high-tech, super-clean chrome silicon alloy materials that are held to tighter stress relief and shot peen tolerances, making them stronger and more efficient than others on the market. A micro-peening process is used to increase durability and longevity of the spring, which means you can push harder for longer. In addition, the added heat treatment reduces load loss during operation. Some springs in the series are also nitrided for racers who are looking to increase lift capacity and number of cycles over the life of a spring. The Signature Series Valve Springs are perfect for extreme stress applications such as professional drag and oval track racing.

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 Part NumberDetailsPrice 
P/N: 73925-1 .650" Lift Dual Valve Spring - 1.306" O.D., 1.100" Coil Bind, 379 Lbs./In. Spring Rate (Qty: 1) $9.49
P/N: 73925-16 .650" Lift Dual Valve Spring - 1.306" O.D., 1.100" Coil Bind, 379 Lbs./In. Spring Rate (Set of 16) $151.89
P/N: 74620-1 .710" Lift Dual Valve Spring - 1.514" O.D., 1.081" Coil Bind, 550 Lbs./In. Spring Rate (Qty: 1) $21.45
P/N: 74620-16 .710" Lift Dual Valve Spring - 1.514" O.D., 1.081" Coil Bind, 550 Lbs./In. Spring Rate (Set of 16) $343.14
P/N: 74630-1 .780" Lift Dual Valve Spring - 1.500" O.D., 1.100" Coil Bind, 403 Lbs./In. Spring Rate (Qty: 1) $16.55
P/N: 74630-16 .780" Lift Dual Valve Spring - 1.500" O.D., 1.100" Coil Bind, 403 Lbs./In. Spring Rate (Set of 16) $264.91
P/N: 74650-1 .750" Lift Dual Valve Spring - 1.514" O.D., 1.144" Coil Bind, 503 Lbs./In. Spring Rate (Qty: 1) $21.45
P/N: 74650-16 .750" Lift Dual Valve Spring - 1.514" O.D., 1.144" Coil Bind, 503 Lbs./In. Spring Rate (Set of 16) $343.14
P/N: 74660-1 .800" Lift Dual Valve Spring - 1.620" O.D., 1.094" Coil Bind, 636 Lbs./In. Spring Rate (Qty:1) $22.50
P/N: 74660-16 .800" Lift Dual Valve Spring - 1.620" O.D., 1.094" Coil Bind, 636 Lbs./In. Spring Rate (Set of 16) $360.06
P/N: 74670-1 .810" Lift Dual Valve Spring - 1.180" O.D., 1.080" Coil Bind, 585 Lbs./In. Spring Rate (Qty:1) $23.14
P/N: 74670-16 .810" Lift Dual Valve Spring - 1.180" O.D., 1.080" Coil Bind, 585 Lbs./In. Spring Rate (Set of 16) $370.22
P/N: 74710-1 .760" Lift Dual Valve Spring - 1.524" O.D., 1.180" Coil Bind, 536 Lbs./In. Spring Rate (Qty: 1) $31.35
P/N: 74710-16 .760" Lift Dual Valve Spring - 1.524" O.D., 1.180" Coil Bind, 536 Lbs./In. Spring Rate (Set of 16) $501.64
P/N: 74721-1 .650" Lift Dual Valve Spring - 1.300" O.D., 1.080" Coil Bind, 408 Lbs./In. Spring Rate (Qty: 1) $20.22
P/N: 74721-16 .650" Lift Dual Valve Spring - 1.300" O.D., 1.080" Coil Bind, 408 Lbs./In. Spring Rate (Set of 16) $323.50
P/N: 74724-1 .850" Lift Dual Valve Spring - 1.625" O.D., 1.100" Coil Bind, 629 Lbs./In. Spring Rate (Qty:1) $18.58
P/N: 74724-16 .850" Lift Dual Valve Spring - 1.625" O.D., 1.100" Coil Bind, 629 Lbs./In. Spring Rate (Set of 16) $297.26
P/N: 74725-1 .800" Lift Dual Valve Spring - 1.550" O.D., 1.150" Coil Bind, 644 Lbs./In. Spring Rate (Qty:1) $18.58
P/N: 74725-16 .800" Lift Dual Valve Spring - 1.550" O.D., 1.150" Coil Bind, 644 Lbs./In. Spring Rate (Set of 16) $297.26
P/N: 74726-1 .800" Lift Dual Valve Spring - 1.550" O.D., 1.150" Coil Bind, 663 Lbs./In. Spring Rate (Qty:1) $18.58
P/N: 74726-16 .800" Lift Dual Valve Spring - 1.550" O.D., 1.150" Coil Bind, 663 Lbs./In. Spring Rate (Set of 16) $297.26
P/N: 74728-1 .900" Lift Dual Valve Spring - 1.625" O.D., 1.100" Coil Bind, 629 Lbs./In. Spring Rate (Qty:1) $22.34
P/N: 74728-16 .900" Lift Dual Valve Spring - 1.625" O.D., 1.100" Coil Bind, 629 Lbs./In. Spring Rate (Set of 16) $337.42
P/N: 74730-1 .790" Lift Dual Valve Spring - 1.620" O.D., 1.100" Coil Bind, 629 Lbs./In. Spring Rate (Qty: 1) $33.50
P/N: 74730-16 .790" Lift Dual Valve Spring - 1.620" O.D., 1.100" Coil Bind, 629 Lbs./In. Spring Rate (Set of 16) $536.06
P/N: 74740-1 .820" Lift Dual Valve Spring - 1.1.620" O.D., 1.170" Coil Bind, 585 Lbs./In. Spring Rate (Qty:1) $33.96
P/N: 74740-16 .820" Lift Dual Valve Spring - 1.1.620" O.D., 1.170" Coil Bind, 585 Lbs./In. Spring Rate (Set of 16) $543.33
P/N: 74743-1 .700" Lift Dual Valve Spring - 1.550" O.D., 1.150" Coil Bind, 551 Lbs./In. Spring Rate (Qty: 1) $20.63
P/N: 74743-16 .700" Lift Dual Valve Spring - 1.550" O.D., 1.150" Coil Bind, 551 Lbs./In. Spring Rate (Set of 16) $329.98
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