Valve Spring Retainers - TI (16) 1.620 Dia. Valve Spring Retainer - 10 Degree - 1.215 / 0.865 / 0.630 in OD Steps - 1.620 in Triple Spring - Titanium - Set of 16

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

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

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

1.570 Dual Valve Springs Valve Spring - RAD-9000 Series - Dual Spring w/Damper - 560 lb/in Spring Rate - 1.100 in Coil Bind - 1.570 in OD - Universal - Set of 16

1.550 Dual Valve Springs Valve Spring - Dual Spring / Damper - 508 lb/in Spring Rate - 1.080 in Coil Bind - 1.550 in OD - Set of 16