1.536 Dual Valve Springs 1300 Series Drag Race

Valve Spring - 1300 Series - Dual Spring - 964 lb/in Spring Rate - 1.215 in Coil Bind - 1.536 in OD - Set of 16

1.539 Dual Valve Springs (16) w/Damper

Valve Spring - RPM Series - Dual Spring / Damper - 500 lb/in Spring Rate - 1.130 in Coil Bind - 1.539 in OD - Set of 16

1.539 Dual Valve Springs - (16)

Valve Spring - 1200 Series - Dual Spring / Damper - 500 lb/in Spring Rate - 1.130 in Coil Bind - 1.539 in OD - Circle Track Endurance - Set of 16

1.540 Valve Spring Set Hot Rod Series w/Damper

Valve Spring - Hot Rod Series - Single Spring / Damper - 311 lb/in Spring Rate - 1.200 in Coil Bind - 1.540 in OD - Set of 16

1.545 Dual Valve Springs - (16)

Valve Spring - 1200 Series - Dual Spring / Damper - 428 lb/in Spring Rate - 1.180 in Coil Bind - 1.545 in OD - Circle Track Endurance - Set of 16

1.550 Dual Valve Springs (16)

Valve Spring - 1300 Series - Dual Spring - 836 lb/in Spring Rate - 1.230 in Coil Bind - 1.550 in OD - Drag Race - Set of 16

1.550 Dual Valve Springs - (16)

Valve Spring - 1300 Series - Dual Spring / Damper - 663 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Set of 16

1.564 Dual Valve Springs (16)

Valve Spring - 1300 Series - Dual Spring - 513 lb/in Spring Rate - 1.150 in Coil Bind - 1.564 in OD - Set of 16

1.564 Dual Valve Springs - (16)

Valve Spring - 1300 Series - Dual Spring / Damper - 525 lb/in Spring Rate - 1.140 in Coil Bind - 1.564 in OD - Set of 16

1.574 Dual Valve Springs (16)

Valve Spring - 1300 Series - Dual Spring - 538 lb/in Spring Rate - 1.150 in Coil Bind - 1.574 in OD - Set of 16

1.574 Dual Valve Springs - (16)

Valve Spring - 1300 Series - Dual Spring / Damper - 550 lb/in Spring Rate - 1.150 in Coil Bind - 1.574 in OD - Set of 16

1.575 Dual Valve Springs - (16)

Valve Spring - 1300 Series - Dual Spring / Damper - 620 lb/in Spring Rate - 1.170 in Coil Bind - 1.575 in OD - Set of 16