Skunk2 72mm Electronic Throttle Body (ETB) – ’06–’11 Honda Civic Si

The Skunk2 72mm Electronic Throttle Body (ETB) for the 2006–2011 Honda Civic Si is a premium bolt-on performance upgrade engineered to deliver massive airflow gains and improved throttle response for your K-Series engine. Designed as a complete replacement for the restrictive OEM 64mm throttle body, the Skunk2 ETB increases airflow by 50%, enhancing horsepower, torque, and overall engine efficiency — ideal for both naturally aspirated and forced induction applications.

Unlike modified factory throttle bodies, the Skunk2 ETB is a fully CNC-machined billet 6061-T6 aluminum unit featuring a precision-honed 72mm bore, high-torque servo motor, and advanced Hall Effect throttle position sensor (TPS) calibrated specifically for your vehicle. This ensures OEM-like driveability with quicker, smoother response and improved airflow control.

Each ETB includes a Skunk2 thermal gasket and all necessary hardware for a simple bolt-on, plug-and-play installation — no motor swapping or complex tuning required.

Note: Due to the increased bore size, the OEM intake tube will not fit. An aftermarket intake or coupler (P/N 943-05-0100) is recommended.

Key Features:

• 50% Increase in Airflow over OEM 64mm throttle body

• Precision CNC-Machined from Billet 6061-T6 Aluminum

• Oversized 72mm Honed Bore for maximum flow efficiency

• High-Torque Precision Servo Motor for reliable response

• Advanced Hall Effect TPS programmed for Civic Si ECU compatibility

• Improved Throttle Response and Acceleration across the powerband

• Ideal for Both NA and Boosted Applications

• Includes Thermal Gasket and Mounting Hardware

• Direct Bolt-On Plug-and-Play Design – No OEM motor swap needed

Technical Specifications:

• Bore Diameter: 72mm (vs. 64mm OEM)

• Construction: CNC-machined billet 6061-T6 aluminum

• Throttle Control: Electronic with Hall Effect TPS

• Motor Type: High-torque servo motor

• Gasket Type: Thermal composite included

• Installation: Direct plug-and-play (no wiring modification)

• Compatibility: Factory ECU and harness (Civic Si K20Z3)

• Recommended Coupler: Skunk2 3.15"–3.00" Silicone Coupler (P/N 943-05-0100)

Vehicle Fitment:
Compatible with:

• Honda Civic Si (2006–2011) – K20Z3 engine

Included:

• (1) 72mm Electronic Throttle Body

• (1) Skunk2 Thermal Gasket

• (1) Complete Hardware Set

• (1) Installation Guide