DescriptionThis exhaust was designed with one thing in mind, winning races! The RS-4 is a unique design with predicated power, a side benefit of a quiet earthy exhaust note that speaks volumes for performance. It was an obvious choice for the KX250F.
Full System includes RS-4 muffler, stainless steel header and tail-pipe, installation hardware, and detailed step-by-step instructions.
An AMA-approved sound insert comes installed in the muffler, along with a 2 meter-Max insert in the box.
Low-Volume Insert and Spark Arrestor Chart