Manley 1.550 Nextek Dual Valve Springs 221452Sf-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

Manley 1.650 Nextek Dual Valve Springs 221454-16Valve Spring - NexTek - Dual Spring - 635 lb/in Spring Rate - 1.105 in Coil Bind - 1.650 in OD - Set of 16

Manley 1.311 Nextek Dual Valve Springs 221431-16Valve Spring - NexTek - Beehive Spring - 353 lb/in Spring Rate - 1.100 in Coil Bind - 1.311 in OD - Polished - Set of 16

Manley 1.550 Pro Dual Valve Springs 22431-16Valve Spring - Professional - Dual Spring / Damper - 507 lb/in Spring Rate - 1.190 in Coil Bind - 1.550 in OD - Set of 16

Manley 1.550 H-11 Dual Valve Springs 22440-16Valve Spring - Professional Series - Dual Spring / Damper - 614 lb/in Spring Rate - 1.090 in Coil Bind - 1.550 in OD - Set of 16