1.500 OD 0.570 ID .030 Thickness Shims 16pk

Valve Spring Shim - 0.030 in Thick - 1.500 in OD - 0.570 in ID - Steel - Set of 16

1.500 OD 0.645 ID .015 Thickness Shims 16pk

Valve Spring Shim - 0.015 in Thick - 1.500 in OD - 0.645 in ID - Steel - Set of 16

1.500 OD 0.645 ID .020 Thickness Shims 16pk

Valve Spring Shim - 0.020 in Thick - 1.500 in OD - 0.645 in ID - Steel - 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

1.550 Dual Valve Springs (16)

Valve Spring - 1300 Series - Dual Spring - 550 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Set of 16

1.550 Dual Valve Springs - (16)

Valve Spring - 1200 Series - Dual Spring - 550 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 in OD - Circle Track Endurance - 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

1.570 Dual Valve Springs 1300 Series C/T

Valve Spring - 1300 Series - Dual Spring - 743 lb/in Spring Rate - 1.035 in Coil Bind - 1.570 in OD - Circle Track - Set of 16