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The Supertech dual valve spring for Subaru EJ20 and EJ25 engines is specified for drag applications only. Presented as a dual-spring option for those Subaru engine families, the listing restricts use to drag applications and identifies the springs as matched to EJ20/EJ25 heads. The product description emphasizes the drag-only designation for the specified Subaru fitments.
Supertech Subaru EJ20/EJ25 Dual Valve Spring (Drag Applications Only)
