Perrin Equal Length Header for Subaru WRX STI

CARB Compliance / Exemption Warning: If you live in California and your application for this product is not CARB Compliant / Exempt, then you cannot purchase it for public highway or street use (in that case it could only be used for formally sanctioned race use on a racing vehicle that may never be used on a public highway or street). If your application is not CARB Compliant / Exempt and you're shipping to California, our system will let you know on the final checkout page.

Perrin equal length headers are designed with performance in mind. Each kit is specifically made to maximize the horsepower of your Subaru WRX STI. These top-quality headers are made of solid 304 stainless steel and brushed to a fine finish. The thick flanges provide a smooth surface to mate to the head or turbo, preventing exhaust leaks. The headers do not require tuning to be used and can simply be installed and driven immediately. Perfect for adding power, lowering spool times, and getting a more refined note from your exhaust.

Standard Features on Perrin Equal Length Headers:

• Extremely precise construction with excellent ground clearance.
• Equal length design offers big increases in power / torque and exhaust gas efficiency. Provides better turbo spool as well.
• Includes all gaskets and hardware required to install.
• Includes thick flanges that directly fit to the stock components and most aftermarket options too.
• 304 stainless steel brushed tubes, flanges, and badging for strength and corrosion resistance.
• No tuning required.
• Smooth flow for better (refined) sound, engine efficiency, and power.
• Compatible with most aftermarket up-pipes and rotated turbos.