Skunk2 K-Series Ultra Race Centerfeed Complete Manifold

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Skunk2 Part # 307-05-8080
Ultra Series Centerfeed Intake Manifold

Skunk2 Ultra Series Centerfeed Intake Manifolds are available for Honda/Acura K-Series engines. They work best with high RPM naturally aspirated engines and are perfect for turbo applications running 20 or more lbs of boost. Plenum volume increases available with 1L and 2L spacers, modular design for ease of porting and tapped with 1/8” and 1/4” NPT for all accessories. Centerfeed manifolds are available as a complete manifold kit or plenum only. OFF ROAD USE ONLY!

Note: Not for sale in the state of California or CARB States.


**Currently in Production and Available for Pre-Order, Expected to Ship September 2025**

Skunk2 Racing is proud to announce the next generation of high performance intake manifolds 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 much anticipated Ultra Race Centerfeed Intake Manifold is the result of years worth of R&D and building upon the performance legacy of our Pro Series Intake Manifold. Using the latest in CFD (Computational Fluid Dynamics) software; Skunk2 Racing has created a three-piece modular design that allows for easy disassembly, porting, and plenum volume changes through the use of a removable plenum and optional plenum spacers. The result is a design that is less restrictive, yielding both torque and power gains well over many of the competitors.

 

FEATURES:

Modular 3pc. Design w/ Removable Plenum
5.0L Plenum Volume**
90mm Throttle Body Flange - Std. 5.0L Ford Pattern
6.0” Tapered Hi-Velocity Runners
Raised 87mm Velocity Stacks
Generously Cast Runner Walls for Porting
Provisions Secondary Fuel Rail & Injectors
3 x 1/8” NPT and 3 x 1/4” NPT Accessory Ports
Hi-Grade Mounting Hardware
Thermal Gasket Included
Fits MOST Popular Chassis Configurations - Not Just Race Cars - See Notes

 

**Optional Billet Aluminum Plenum Spacers Available in 1L or 2L Sizes


US Patent: D677700

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 associated throttle body or throttle body adapter.


RACE APPLICATIONS ONLY - NOT INTENDED FOR STREET USE


5.0 Liter > High Horsepower N/A and Forced Induction Applications to 600HP
6.0 Liter > 600-1000HP
7.0 Liter > 1,000HP Up

Fitment:
2002 - 2005 Honda Civic (2.0L Si K20A2 Style) 2002 - 2006 Acura RSX (2.0L Base/Type S K20A2 Style) 2004 - 2006 Acura TSX (2.4L Base K20A2 Style)