Upgrade your vehicle's performance with the K&N RC-2540 Custom Air Filter. Designed to increase horsepower by up to 12%, this air filter is the perfect solution for enthusiasts looking to enhance their engine's efficiency. With its unique clamp-on design, the K&N RC-2540 allows for superior airflow compared to traditional air boxes, making it an ideal choice for high-performance applications. The K&N Custom Air Filter is crafted for a variety of applications and is known for its durability and reliability. While it is not street legal, it provides a significant boost in airflow that may require adjustments to jet sizes by up to 25% to fully capitalize on its potential. Transform your ride with the K&N RC-2540 and experience the thrill of increased power and performance like never before. Features: * Increases horsepower by up to 12% * Clamp-on design for superior airflow * Durable and reliable construction * Wide range of sizes for various applications * Not street legal, ideal for performance enhancements