Green Filter USA® was founded by listening to the filtration needs of racing professionals and leading engine performance manufacturers. Since their beginning, Green Filter USA® has utilized proprietary methods and components to engineer performance filters designed to meet the industry’s very high standards for construction quality, durability, airflow, particulate capture, and also reusability, while being compatible with the new monitoring technologies included on today’s highly engineered engines. Racecar Engineering™ is proud to distribute and support the entire Green Filter USA® product line. Shop here online now for the most popular parts from Green Filter USA®. Always remember, if you don't find what you need on here our website, we'll gladly special order the item for you directly from the factory. Please contact our Technical Sales staff for complete information.