Valve Springs, Retainers

Supertech Honda B16/B18C Dual Valve Spring Kit (w/Titanium Retainers) - SPRK-H200DR

Supertech Mazda Miata 1.8L Dual Valve Spring Kit - SPRK-MM18-D

Supertech Mazda Miata 1.6L Dual Valve Spring Kit (70lbs at 34.2mm Installed Height) - SPRK-MM16D-2

Supertech Subaru Impreza EJ25 Dual Valve Spring Kit - SPRK-TS1015-SU5

Supertech 05-15 Ford Focus 2.0L Dual Valve Spring Kit - SPRK-TS-DUR-D2

Supertech Ford Duratec/Mazda MZR 2.0L/2.3L/2.5L Dual Valve Spring Kit - SPRK-TS-DUR-D1

Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit - SPRK-AUDI18T-DR

Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit - SPRK-AUDI18T

Supertech Audi 2.5T FSI/TFSI/EA113/EA888 Single Valve Spring Kit - SPRK-A2416-BE2

GSC P-D Ford Raptor/Platinum/Limited Ecoboost 3.5L H.O. Conical Valve Spring and Ti Retainer Kit - 5102

Supertech Honda F20/K20A2 Beehive Valve Spring Kit - SPRK-H1007BE-2

Supertech Honda F20/K20A2 Beehive Valve Spring Kit - SPRK-H1007BE-1