Valve Spring - Dual Spring - 399 lb/in Spring Rate - 1.080 in Coil Bind - 1.470 in OD - Set of 16

Valve Spring - Max Effort - Dual Spring - 475 lb/in Spring Rate - 1.040 in Coil Bind - 1.500 in OD - Set of 16

Valve Spring - Dual Spring - 413 lb/in Spring Rate - 1.100 in Coil Bind - 1.500 in OD - Set of 16

Valve Spring - Dual Spring / Damper - 348 lb/in Spring Rate - 1.150 in Coil Bind - 1.514 in OD - Set of 16

Valve Spring - Dual Spring / Damper - 510 lb/in Spring Rate - 1.190 in Coil Bind - 1.540 in OD - Set of 16

Valve Spring - Max Effort - Dual Spring / Damper - 471 lb/in Spring Rate - 1.150 in Coil Bind - 1.557 in OD - Set of 16