Features:

• Direct-fit replacement for engine.
• Increased airflow, enhanced Venturi effect.
• Improved both mid-range and top-end power gains.
• Runners are similar in length to the OEM RBC's but with larger bores.
• Special tapered and tapered plenum design that preserve mid-range power but accelerate airflow to allow for significant top-end power gains.

Fitment:

• For 06-11 Honda Civic Si K-series engine.
• For 04-08 Acura TSX Base.
• !!! Ideal for turbocharged and naturally aspirated applications.