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The K&N carbon fiber 4-inch air box (large, no base) is a lightweight Sprint Car style airbox designed to accept 4-inch intake arrangements and provide increased airflow for racing applications. Constructed from carbon fiber and sold as the airbox only, it supports K&N washable, reusable filter media and is intended for use where reduced weight and high airflow are priorities.
K&N Custom Racing Assembly Carbon Fiber 4in Air Box w/o Base - Large
