Skunk2 Alpha Header - 2002-2005 Honda Civic Si

** NOT STOCKED AT OUR WAREHOUSE THIS IS A DROPSHIP ITEM PLEASE CONTACT US PRIOR TO ORDERING AS THEY MAY BE ON BACKORDER **

Patterned after our already popular and dyno-proven MegaPower Headers, which have been used by leading, competitive race teams for years, Skunk2’s Alpha Series Header employs many of the same design characteristics and technology.

Skunk2 is proud to introduce its Alpha Series Header for the EP3 2002-2005 Honda Civic Si. Patterned after our already popular and dyno-proven MegaPower Headers, which have been used by leading, competitive race teams for years, Skunk2’s Alpha Series Header employs many of the same design characteristics and technology. Skunk2’s engineers wanted to offer the same custom racing headers they use on the company’s own cars to enthusiasts at a good value, but without compromising quality. The process has taken years, but thanks to cutting-edge design, manufacturing technology, and craftsmanship, Skunk2’s produced the finest production header available.

All Skunk2 headers are designed and engineered to maximize exhaust flow and increase both horsepower and torque throughout the powerband. The unique design is the result of more than a decade of racing experience coupled with computerized modeling and extensive dyno testing. Each Skunk2 Alpha Series Header features equal-length, sequentially paired, stepped primaries and a 4-2-1 tri-Y design that terminates into a collector with a 2.5-inch outlet. These features, paired with Skunk2’s unique design specs, provide an extremely broad powerband that’s applicable to a wide range of engine sizes and configurations. Alpha Series Headers also feature the smallest possible primary tubes required to achieve optimum overall and peak power. By minimizing the primary tubes’ diameter, Skunk2 is able to maintain the highest possible exhaust gas speed throughout the header, which improves mid-range power and throttle response significantly. Skunk2’s Alpha Series Header provides the perfect combination of top-end power without sacrificing mid-range performance or throttle response.

Not Available for Purchase in California

Includes:

• Adapter Pipe
• Donut gasket
• Oxygen sensor defouler

Race application; eliminates catalytic converter.

O2 sensor bung thread pitch: M18 x 1.5.