This Skunk2 Racing adapter lets you install a Grams Performance Drive-By-Wire or Honda K-series (RBC) drive-by-wire throttle body onto Skunk2 Pro Series and Ultra Street intake manifolds, and is required when running the Ultra Street manifold on the 06-15 Civic Si. It is CNC-machined from billet 6061 aluminum and anodized for corrosion resistance, with a 72mm opening and 71mm exit. A MAP sensor provision and 1/8 in. NPT accessory port add flexibility, and the gasket and mounting hardware are included.
Specifications
| Type | CNC-machined throttle body adapter (RBC to PRB pattern) |
| Material | Billet 6061 aluminum |
| Finish | Anodized |
| Bore | 72mm opening / 71mm exit |
| Included | Gasket and mounting hardware |
| Fitment | Skunk2 Pro Series / Ultra Street manifolds; Honda RBC drive-by-wire throttle body |
| Part Number | 309-05-0120 |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
