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.
| 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 |
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