Valve Spring - Single Spring - 293 lb/in Spring Rate - 1.125 in Coil Bind - 1.400 in OD - Set of 12

Valve Spring Kit - Conical - Single Spring - 520 lb/in Spring Rate - 1.185 in Coil Bind - 1.060 in / 1.332 in OD - Chromoly Retainers / Viton Seals / Seats - Ford Godzilla - Kit

Valve Spring Kit - Dual Spring - 378 lb/in Rate - 1.070 in Coil Bind - 1.295 in OD - Titanium Retainers / Locks / Seals - GM LS-Series - Kit

Valve Spring Kit - Dual Spring - 505 lb/in Rate - 1.100 in Coil Bind - 1.320 in OD - Steel Retainer - Viton Seal - Steel Seat - GM LS-Series - Kit

Valve Spring - Beehive Spring - 313 lb/in Spring Rate - 1.100 in Coil Bind - 1.055 in / 1.290 in OD - Set of 16

Valve Spring - Single Spring / Damper - 454 lb/in Spring Rate - 1.100 in Coil Bind - 1.269 in OD - Set of 16