Upgrade your Subaru 2004 - 2021 STI or 2002 - 2014 WRX with the GrimmSpeed Unequal Length Header. This header is a top - notch exhaust component crafted by GrimmSpeed engineers. They take their time in testing and development, ensuring that you get the most refined product. It's been put through countless hours and thousands of miles of testing.
**Fitment**:
- 2004 - 2021 Subaru STI
- 2008 - 2014 Subaru WRX
- 2002 - 2005 Subaru WRX 5MT (Requires STI Oil Pan and Pickup)
- 2006 - 2007 Subaru WRX (Requires STI Oil Cooler and Feed Pipe)
**Key Features**:
- **Innovative Runners**: 1.5 to 1 Unequal Length Runners offer equal - length performance with an unequal - length sound.
- **Low - Angle Collector**: 4 - into - 1 Low - Angle Merge Cast Collector for minimal restriction and max performance.
- **Smooth Flow**: Single piece mandrel bent tubing and merge collector eliminate unwanted steps.
- **Power Gains**: Get +25hp and +25ft/lbs of torque over stock.
- **Fast Spooling**: Quickest spooling among aftermarket headers.
- **Easy Installation**: No tune required, just bolt on. Gaskets and hardware are included.
- **Aftermarket Compatibility**: Designed to fit with STI or popular aftermarket oil pans.
- **Durable Construction**: Full 304 Stainless Steel with 1/2' flanges and 14ga runners.
- **Made in USA**: Manufactured and welded in the USA for top - notch quality control.
There's also an installation video available for this GrimmSpeed Unequal Length EJ Header.
Using this GrimmSpeed Unequal Length Header is straightforward. First, make sure your Subaru is the right model as listed in the fitment section. If your car is a 2002 - 2005 Subaru WRX 5MT, you'll need to install an STI Oil Pan and Pickup. For 2006 - 2007 Subaru WRX, an STI Oil Cooler and Feed Pipe are required.
Installation is easy as no tune is needed. Just use the included gaskets and hardware to bolt it on. You can refer to the installation video for guidance.
When it comes to maintenance, since it's made of 304 stainless steel, it's quite durable. But it's a good idea to regularly check the connections and make sure there are no loose bolts. Also, keep an eye on the exhaust performance. If you notice any unusual noises or a drop in power, it might be time to have it inspected.
