Part #: S10097
SUBARU IMPREZA WRX STI DUAL VALVE SPRING
This Spring requires Ferrea Titanium Retainer # E11064 and Ferrea Spring Seat Locator # SL1051 (Discard OEM Spring Seat Locator)
Type/Material/Application: Dual Spring - Special Alloy - Turbo - Drag Racing
Outside Diameter: 20.8 mm/28 mm
Price is for a quantity of 16 valve springs.
Does not fit FA20 motors.