Billetworkz Subaru STI SI-Drive Knob CapRefresh your Subaru STIs interior with the Billetworkz SI Drive Cap a direct replacement for your factory button cover that adds a bold, custom touch in minutes. Crafted for STI models equipped with Subarus SI Drive system, each cap is precision CNC machined from high quality billet aluminum and finished in a range of durable colors. Whether you want a subtle accent or a standout detail, theres an option to match your build and style. Direct
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