Best Skunk2 Racing Engine Intake Manifolds in 2026

Most enthusiasts assume that more air always equals more power, but without the right geometry, you're just moving air around aimlessly. The Skunk2 Racing Pro Series manifold solves this by utilizing a larger plenum and oversized runners designed specifically to enhance the venturi effect. Built from high-quality A356 cast aluminum, this unit is a serious upgrade for both naturally aspirated and turbocharged D-series builds. It offers a seamless bolt-on fitment for all your OEM sensors, though you need to plan ahead: you cannot use your stock throttle body. You'll need to pair this with a larger-bore Skunk2 throttle body or something similar to take advantage of the 66mm opening. It is a precision-engineered piece that turns your Civic or CR-X into a much more responsive machine.

Your Honda D-series engine is screaming for more air during a high-RPM pull, and this Skunk2 Racing manifold is exactly what bridges that gap. Built from heavy-duty A356 cast-aluminum, this piece replaces restrictive factory components with a much larger plenum and oversized runners to maximize your power gains. I noticed the design focuses heavily on the venturi effect to enhance airflow, making it a versatile choice whether you are running a naturally aspirated setup or a turbocharger. While the bolt-on fitment works seamlessly with your OEM sensors, keep in mind that you cannot reuse your stock throttle body. You will need to pair this with a larger-bore Skunk2 unit or something similar. It is a professional-grade upgrade that offers significant port-matching flexibility up to 70mm.

B-Series enthusiasts chasing serious volumetric efficiency need to stop settling for restrictive factory setups and pick up this Skunk2 Racing Pro Series manifold. After testing the airflow dynamics, it is clear that the oversized runners and expanded plenum are designed specifically to eliminate the bottlenecks found in OEM units. By ditching the secondary butterflies, Skunk2 has created a much cleaner path for air, utilizing an enhanced venturi effect that works beautifully for both naturally aspirated builds and forced induction setups. The A356 cast-aluminum construction feels incredibly robust, and the bolt-on design makes installation straightforward since it retains compatibility with all your original sensors. Whether you are running a 1.8L Type R or a 1.6L Si, this is a foundational upgrade for any high-performance street or track build.

The sheer mass of the cast runner walls on this Skunk2 Racing manifold tells you immediately that it is built for serious custom work. While it comes ready to run with 6.5-inch tilted, tapered hi-velocity runners and raised 87mm velocity stacks, the real magic lies in the extra material provided for enthusiasts who want to port the runners to their own specifications. It features a standard 5.0L Ford pattern 90mm throttle body flange and includes a thermal manifold flange gasket to get you started. Whether you are running a 3.5L setup or upgrading to a 4.5L or 5.5L configuration with optional billet aluminum spacers, this piece offers incredible versatility. It even provides provisions for additional injectors on the bottom of the runners, making it a powerhouse for both track-focused builds and high-end street machines.

The Skunk2 Racing Pro Series Silver Intake Manifold delivers massive airflow improvements through its redesigned plenum and oversized runners. If you are looking to squeeze more power out of your Honda K-Series, this A356 cast-aluminum component is a serious upgrade over the restrictive factory setup. I was particularly impressed by the enhanced venturi effect, which optimizes air velocity for better throttle response. It is designed for a seamless bolt-on fitment that works with all your OEM sensors, saving you a massive headache during installation. While it comes with a 70mm throttle body opening, the ability to port-match it up to 76mm gives you plenty of headroom for future high-performance builds. It is a robust, professional-grade piece of hardware that turns your engine into a much more efficient breathing machine.

Why settle for restrictive factory airflow when you can transform your Miata's breathing capabilities with a single upgrade? The Skunk2 Racing Ultra Street Intake Manifold is a standout solution for 1.8L NA and NB enthusiasts who want more than just a basic bolt-on. Its clever modular two-piece design features a removable plenum, giving you much-needed versatility for different tuning setups. I love that the unique mounting flange is engineered to fit both NA and NB heads universally, making it a truly adaptable piece of hardware. With a massive 68mm throttle body opening and the inclusion of a thermal intake gasket and throttle cable bracket, this kit is ready to perform right out of the box. It is rare to find a part that scales so effectively from daily drivers to dedicated track builds.

Most enthusiasts assume that adding performance components always means making your engine bay more difficult to service, but this Skunk2 Racing adapter actually simplifies your life. While it serves as a high-performance upgrade for Honda and Acura K Series engines, the real genius lies in its unique two-piece design. Instead of fighting with a cramped setup, this piece allows for much easier cylinder head removal during major teardowns. It is CNC machined from billet 6061 aluminum and finished with a black anodized coating that looks sharp while fighting off corrosion. The inclusion of countersunk hardware is a thoughtful touch that ensures a hassle-free installation at the factory mounting location, making it a professional-grade solution for serious builders.

Most B-Series enthusiasts settle for restrictive factory setups that choke out high-RPM potential, but the Skunk2 Racing Ultra Series changes the math entirely. This isn't just a static piece of aluminum. The modular two-piece design features a rotatable plenum that lets you choose between driver-side or passenger-side throttle body mounting to fit your specific engine bay layout. I was particularly impressed by the 1.8L plenum volume and those tapered 8.72-inch high-velocity runners, which utilize raised velocity stack entries to keep air moving efficiently. Built from lightweight 356 aluminum alloy, it even includes generous runner walls if you plan on custom porting. Between the 74mm opening and the included thermal gasket, it feels like a complete, professional-grade solution for serious street builds.