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

Valve Spring - 1200 Series Circle Track - Dual Spring / Damper - 500 lb/in Spring Rate - 1.130 in Coil Bind - 1.539 in OD - Set of 16

Valve Spring - Elite Race - Dual Spring / Damper - 502 lb/in Spring Rate - 1.135 in Coil Bind - 1.539 in OD - Set of 16

Valve Spring - NexTek - Dual Spring - 964 lb/in Spring Rate - 1.215 in Coil Bind - 1.540 in OD - Set of 16

Valve Spring - Dual Spring / Damper - 377 lb/in Spring Rate - 1.089 in Coil Bind - 1.540 in OD - Spring Retainers / Valve Locks - Kit

Valve Spring - Sure Seat - Dual Spring / Damper - 1.130 in Coil Bind - 1.540 in OD - Small Block Chevy / Small Block Ford - Set of 16