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The Ferrea valve spring kit for Subaru WRX EJ20 drag racing applications is a dual-spring set tuned for short-duration, high-load launches. Intended to provide stable valve control under the intense cycles common in drag events, the dual arrangement replaces stock springs to help preserve valve motion during repeated hard launches while supporting reliable operation in race conditions.
Ferrea Subaru WRX EJ20 Drag Racing Dual Spring Kit
