Skunk2 Universal Air Stack Kit with Filter

The Skunk2 Universal High Velocity Intake Kit reduces heat soak and maximizes airflow and velocity for any induction system. The kit utilizes a massive 6.8 in. diameter high-flow low-restriction air filter that features a unique double-cone design where the inverted inner filter cone not only increases the filter surface area and air flow capacity, it also helps reduce turbulence inside the filter and guide the incoming air to achieve higher flow rates and velocities. Included with the filter is a unique Composite Velocity Stack that incorporates golf ball like dimples on the surface. These dimples create an energized boundary layer that reduces surface drag and allows air to stay attached as it curves into the bell mouth. The result is higher air velocities and increased air mass delivery to the engine. When we flow tested a conventional air filter design against the Skunk2 filter and used advanced CFD analysis program (below), our filter flowed 20% more air-mass, which translates to significantly less restriction the engine sees.

Additional Information

Cold Air Intake Kit; 3.0 in.; Incl. Reducer Silicone Coupler/Hi-Flow Intake/Velocity Stack; Universal Fit;

Product Overview

Skunk2 drew upon its experience and longstanding technical partnership with championship-winning Compass360 Racing when developing its all-new Cold-Air Intake for the ’06-’11 Civic Si. The results are the best performing, best fitting intake system available.

Skunk2’s Cold-Air Intake is manufactured from molded polymer plastic for superior intake air insulation when compared to aluminum as well as for a smooth, continuous taper. When compared to aluminum, the thicker polymer material results in a superior thermal barrier and lower intake air temperatures. Each kit includes a 3.5-inch internal diameter lower tube and a tapered, 3.5-inch to 3.0-inch internal diameter upper tube that connects to the factory throttle body with a high-quality, silicone connector (larger diameter connectors for use with Skunk2 throttle bodies or similar sold separately). The two piece design and supplied MAF sensor adapter allows for compatibility with vehicles utilizing the factory ECU. A silicone coupler featuring a smooth, tapered transition between the two tubes is also included for vehicles equipped with aftermarket engine management systems that don’t utilize MAF sensors.

In an effort to reduce the possibility of submerging the air filter during wet conditions, Skunk2’s design positions the air filter downward-facing for approximately two inches of additional ground clearance when compared to competitors’ designs that locate the air filter from the side. That, combined with a design that doesn’t require cutting or modifying the factory fender liners, greatly reduces the chances of water entering the intake during wet conditions.

Each Cold-Air Intake kit includes relocation hardware for the battery, ECU, fuse box, and cooling system reservoir tank as well as high-quality stainless steel clamps and mounting hardware. Unlike other intake systems, only Skunk2’s unique design and brackets allow for the OEM battery to be retained. A specially shaped, silicone upper radiator hose is also included with each kit to ensure maximum clearance for the intake tubing and proper fitment.

Skunk2 developed its unique Cold-Air Intake system in 2009 for back-to-back Grand-Am champions and racing partners Compass360 Racing. Now that the team is retiring its eighth-generation Civic race cars, we can finally release this race-proven technology to enthusiasts.

• 3 Stainless Steel Band Clamps
• Composite Dimpled Velocity Stack
• Over 317 sq. in. Area Of High Flow Filter Media
• Reinforced Automotive Grade Silicone Adapter Coupler

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Product Details

Reference Information

Velocity Stack, Universal Velocity Stack w/ Filter 3-1/2 IN Outlet w/ 3 IN Coupler

Skunk2's universal air intakes reduce heat soak and maximizes airflow and velocity on any induction system. The intake utilizes a massive 6.8 in. diameter high-flow low-restriction air filter that features a unique cone design. The inverted inner filter cone not only increases the filter surface area and airflow capacity—it also helps reduce turbulence inside the filter and guides the incoming air to achieve higher flow rates and velocities. Included with the filter is a unique composite velocity stack that incorporates golf ball like dimples on the surface that creates an energized boundary layer to reduce surface drag and allows air to stay attached as it curves into the bell mouth. The result is higher air velocities and increased air mass delivery to the engine. Skunk2 flow-tested a conventional air filter design against the Skunk2 Racing filter and advanced CFD analysis showed their filter flowed 20 percent more air-mass, which translates to significantly less restriction on the engine.