k24 Skunk2 Intake Manifold

The Ultra “Street” Intake Manifold

Welcome the long-awaited Ultra “Street” Intake Manifold tailored specifically for the ’02-’05 Civic Si, ’02-’06 RSX/RSX Type S, or any engine swap employing the K20A/K20A2/K20Z1/K24A1 powerhouses or cylinder heads!

Features

• Modular 2pc. Design w/ Removable Plenum
• Rotatable Plenum Allows Driver-side or Passenger-Side Throttle Body Mounting
• 1.8L Plenum Volume
• 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
• Thermal Gasket Included
• 2 x 1/4″ NPT and 2 x 1/8″ NPT Accessory Ports

Description

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 Accessory

Optional Billet Aluminum Plenum Spacer Available in .5L Size

Compatibility Notes

The K Series Ultra “Street” Manifold uses the EARLY PRB/ PRC style cylinder head and throttle body mounting flange pattern but can be installed on the LATE RBC/ RBB style cylinder heads through the use of an aftermarket Water Bypass Adapter and our DBW Throttle Body Adapter (PN# 309-05-0120).

Installation on ’02-’05 Civic Si (EP3)

Installation on the ’02-’05 Civic Si (EP3) requires several modifications. The radiator core support must be trimmed, the wiring for the TPS sensor may need to be extended, and clearance between the TPS and radiator hose may require custom upper hose or modification for the radiator.

Fitment

Skunk2 Racing Warranty

For information on Skunk2 Racing warranty terms and conditions, please click here.

Purchase Disclaimer: You are hereby informed and warned to check your local, state, and federal laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts. Bolt Motorsports does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Bolt Motorsports will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls. In accordance with local laws and regulations, Bolt Motorsports will not ship parts to locations where usage or installation of said part would be in violation of the aforementioned acts.