Skunk2 Alpha Series Header 06-11 Honda Civic Si

Upgrade your exhaust performance with the Skunk2 Alpha Series Header for 2006–2011 Honda Civic Si, engineered for enthusiasts who want real gains in horsepower, torque, and throttle response. Designed as part of Skunk2’s high-performance Alpha Series lineup, this header is built to maximize exhaust flow while maintaining durability for both street and spirited driving.

Constructed from high-quality stainless steel, the Skunk2 Alpha Series Header features precision mandrel-bent piping that reduces exhaust restriction and improves scavenging efficiency. The equal-length design helps deliver smoother power delivery across the RPM range, allowing your K-series engine to breathe more freely and perform at its full potential.

This header is a direct performance upgrade over the restrictive factory manifold, making it an essential mod for tuned or stock Civic Si builds. Whether you’re running bolt-ons or a full performance setup, it supports increased airflow and pairs perfectly with aftermarket intakes, exhaust systems, and ECU tuning.

The Skunk2 Alpha Series is known for its aggressive power gains, improved mid-to-high RPM performance, and race-inspired engineering. It is designed to withstand high temperatures and demanding driving conditions, making it suitable for both daily use and track applications.

Fitment is specifically for the 2006–2011 Honda Civic Si (FA5/FG2 K20Z3 engine), ensuring proper alignment and installation with compatible components.

If you’re looking for a proven performance header that delivers both sound and power improvements, the Skunk2 Alpha Series is one of the most trusted choices in the Honda tuning community.