Manley 1.640 Nextek Valve Springs 221425-16

Manley 1.640 Nextek Dual Valve Springs 221424P-16Valve Spring - NexTek - Dual Spring - 647 lb/in Spring Rate - 1.070 in Coil Bind - 1.640 in OD - Polished - Set of 16

Manley 1.640 Dual Valve Springs 221424-16Valve Spring - NexTek - Dual Spring - 647 lb/in Spring Rate - 1.070 in Coil Bind - 1.640 in OD - Set of 16

Manley 1.500 Nextek Dual Valve Springs 221420-16Valve Spring - NexTek - Dual Spring - 780 lb/in Spring Rate - 1.130 in Coil Bind - 1.500 in OD - Set of 16

Manley 1.500 Nextek Dual Valve Springs 221456-16Valve Spring - NexTek - Dual Spring - 800 lb/in Spring Rate - 1.130 in Coil Bind - 1.500 in OD - Set of 16

Manley 1.530 Nextek Dual Valve Springs 221432-16Valve Spring - NexTek - Dual Spring / Damper - 435 lb/in Spring Rate - 1.170 in Coil Bind - 1.530 in OD - Set of 16