The special feature of this exhaust system for the Honda CRF450R/RX is the new silencer, which is the largest possible fit for the available confined space. Increased sound silencing additionally ensures improved flow for the exhaust gases. The innovatively profiled silencer surface breaks up the sound and enhances the dampening effect to meet FIM noise limits. At the same time, it provides a deep, full sound and extra strength for coping with challenging off-road racing conditions.