The OXA Racing Black Edition rear muffler is a high-quality performance muffler with a unique black design, designed for BETA RR 20-25 models. The muffler provides improved engine feel and throttle response, with an emphasis on efficient gas flow and maintaining available power throughout the rpm range - ideal for sporty and competitive enduro riding. Constructed from high-quality raw materials for high heat resistance and intensive use, including advanced internal filling for controlled noise reduction. Simple Bolt-On installation and a compact and strong design that has proven itself in the field. An excellent choice for riders looking for a combination of performance, reliability and a combat look.