The Skunk2 3.15" to 3.00" Reducer Coupler enables seamless installation of the Grams Performance & Design drive‑by‑wire (DBW) throttle body into Honda Civic Si (2006–2011) cold air or intake systems originally built with 3.15" tubing. It’s also compatible with Subaru BRZ, Scion FR‑S, and Toyota 86/GR86 setups that use similar coupler dimensions. This coupler eliminates the need to stretch or splice original couplers, simplifying installation and maintaining clean intake flows.

Key Features:

• Reducer coupler from 3.15" ID down to 3.00" ID

• Facilitates installation of Grams DBW throttle body without modification

• Maintains smooth airflow transitions

• Compatible with 2006–2011 Civic Si and similar intake systems

• Made from durable silicone material (or equivalent — verify with manufacturer)

Vehicle Fitment / Use:

• Honda Civic Si (2006–2011)

• Also useful in Subaru BRZ, Scion FR‑S, Toyota 86/GR86 cold air / intake systems

Included:

• (1) Reducer Coupler (3.15” → 3.00”)

• Clamps / hardware