Oil-Free Air Filter

The GrimmSpeed DRY-CON Panel Filter is engineered as a high-performance, direct-replacement air filter for the stock airbox, offering a safe and straightforward method to boost power without requiring a tune. Its oil-free, dry-construction media utilizes two distinct layers of synthetic material, balancing excellent flow capability with the same filtration efficiency as OEM filters. This design results in 62% better flow than stock, leading to measurable gains in torque and horsepower. Extensive lab testing using SAE-5011 standards confirmed the filter's performance, demonstrating a significant increase in CFM while maintaining 99.1% filtration efficiency, comparable to OEM specifications. Dyno testing on a 2020 factory-tuned STI revealed an average increase of +9 ft-lbs of torque and +6 WHP from 5400rpm to redline. The filter boasts a long service life with up to a 20,000-mile interval and is serviceable and reusable with popular cleaning kits. It is proudly 100% Made in the USA and comes with a 1-year warranty. This filter is compatible with the following Subaru models: 2022+ WRX, 2019-2021 STI, 2019+ Ascent, 2019-2023 Forester, and 2020+ Legacy/Outback (note: may not fit all trim models within the specified year ranges).