The K&N Custom Racing Assembly Carbon Fiber 4in Air Box is a high-performance intake component designed for racing applications. Crafted from ultra-lightweight carbon fiber, this Sprint Car Style Air Box offers exceptional durability and airflow, making it ideal for competitive racing environments. Its construction ensures minimal weight addition while maintaining strength, and it is equipped with a base and hardware for straightforward installation. Like all K&N filters, it features a washable and reusable design, allowing for easy maintenance with K&N oil and cleaner to sustain optimal airflow and filtration efficiency. This assembly enhances engine breathing capabilities, contributing to improved power output and throttle response during high-performance use.
This large-sized air box is suitable for various racing vehicles utilizing 4-inch intake systems. It is intended for use in motorsport settings where maximum airflow and durability are critical, such as sprint cars and other race cars with multi-Siamese stacks. Designed for direct bolt-on installation, it replaces traditional intake setups to optimize airflow and engine performance. The kit includes the carbon fiber air box, base, and hardware necessary for secure mounting. Compatible with racing engines requiring a 4-inch air intake, this product is ideal for racers seeking lightweight, high-flow intake solutions that deliver consistent performance on the track.
