"B" Stock Subaru STI SI-Drive Knob Cap - Mint Green
Total add-ons:
Straight from the Billetworkz Backroom
Refresh your Subaru STI’s 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 Subaru’s 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, there’s an option to match your build and style.
- Direct replacement for OEM SI-Drive button cap
- Precision CNC-machined from billet aluminum
- Durable finish available in multiple colors
- Installs easily – no special tools required
- Compatible with Subaru STI models equipped with SI-Drive
B-Stock items are fully functional and may come from discontinued colors, limited runs, overstock, or have minor cosmetic blemishes. Fit, performance, and durability are not affected. Quantities are limited and will not be restocked.
B-Stock items are final sale and are not eligible for returns or exchanges.
Part of the B Stock Collection
Part of the B Stock Collection
B-Stock items are fully functional and may come from discontinued colors, limited runs, overstock, or have minor cosmetic blemishes only. Fit, performance, and durability are not affected. Quantities are limited and will not be restocked.
Installation Guide
Installation Guide
Access our step-by-step installation guides and install your Billetworkz products with confidence. Each guide provides clear instructions to ensure perfect fitment every time.
Processing Time
Processing Time
Most orders ship within 1–3 business days, but processing times can vary depending on inventory, color selection, and customization options.
Returns and Exchanges
Returns and Exchanges
B-Stock items are final sale and are not eligible for returns or exchanges.

$40.00