Skunk2 Ultra Series Street K20A/A2/A3 K24 Engines Intake Manifold - Black

The much anticipated Ultra "Street" Intake Manifold for the '02-'05 Civic Si and '02-'06 RSX/ RSX Type S, and/ or any swap using the K20A/ K20A2/ K20Z1/ K24A1 engines or cylinder heads has finally arrived!

The Ultra Series is years of research and development, culminated in a multi-piece cast aluminum intake manifold that offers advantages that only a modular design could allow. Using the latest in CFD (Computational Fluid Dynamics) software; Skunk2 Racing has created a two-piece modular design that allows for easy disassembly, porting, and plenum volume changes through the use of a removable plenum lid and optional plenum spacers. In addition to CFD testing, the Ultra Series Intake Manifold has undergone extensive in-house dyno testing which has led to a design that is less restrictive, yielding both torque and power gains well over many of the competitors.

Skunk2 Racing Ultra Street Intake Manifolds are cast-aluminum, manufactured from high-grade 356 aluminum alloy for strength and lightweight. Each manifold is CNC-machined for a precise fit, and individually inspected for quality assurance. The Ultra Series Street manifold features a generous 71mm throttle body opening and is constructed with thick walls at entry, minimizing concerns of breakthrough when port matching. Intense planning and design went into the plenum to distribute even airflow to all four cylinders under dynamic load conditions. Placement and design of the velocity stacks were rigorously flow tested to ensure maximum delivery of air to the cylinder. Large velocity stack raised bell mouth entries lead to 6.85” long intake runners with smooth transitions allowing the Ultra Street Intake Manifold to really move some air!

Skunk2 Racing Ultra Street Intake Manifolds are designed to be used in modified naturally aspirated applications as well as mild turbo/supercharged setups.

• **Optional Billet Aluminum Plenum Spacer Available in .5L Size Features:
• Modular 2pc. Design w/ Removable Plenum
• Rotatable Plenum Allows Driver-side or Passenger-Side Throttle Body Mounting
• Tapered 6.85" Long High-Velocity Runners w/ Raised Velocity Stack Entries
• Generously Cast Runner Walls for Porting
• 71mm Throttle Body Opening
• Lightweight 356 Aluminum Alloy Construction
• Hi-Grade Mounting Hardware
• 2 x 1/4" NPT and 2 x 1/8" NPT Accessory Ports

Vehicle Fitment

• 2002-2005 Honda Civic
• 2002-2006 Acura RSX

Please verify exact fitment for your trim and engine before ordering.

Manufacturer Part Number: 307-05-0605

Images are for illustrative purposes only. Actual product may vary.

Emissions Note: This product is not CARB approved and is not legal for sale or use on pollution-controlled motor vehicles in California, or in states that have adopted California emission standards. It is intended for off-road / racing use only. It is the responsibility of the installer/end-user to ensure compliance with all applicable federal, state and local emissions regulations.

⚠ WARNING (California Proposition 65): This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.