Manley 1.500 Nextek Dual Valve Springs 221420-16

Manley 1.550 Nextek Dual Valve Springs 221452Sf-16Valve Spring - NexTek - Super Finish - Dual Spring - 618 lb/in Spring Rate - 1.150 in Coil Bind - 1.550 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

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

Crower Valve Springs - Dual 1.500 68340-16Valve Spring - Dual Spring / Damper - 452 lb/in Spring Rate - 1.080 in Coil Bind - 1.500 in OD - Set of 16

Manley 1.580 Dual Valve Springs 221443-16Valve Spring - NexTek - Dual Spring - 535 lb/in Spring Rate - 1.170 in Coil Bind - 1.580 in OD - Set of 16