RS-4 Complete Exhaust System

The Yoshimura RS-4 Complete Exhaust System is engineered to significantly enhance the performance of your Honda CRF250R. This full system integrates a lightweight titanium header with a titanium RS-4 muffler, culminating in a striking carbon fiber end cap. Its unique pentagonal muffler shape, coupled with a new front cap design that functions as a poly-resonant chamber, results in a quieter exhaust note while simultaneously boosting mid to top-end power output. Constructed with premium materials, this system includes all necessary installation hardware and detailed, step-by-step instructions for a comprehensive upgrade. The titanium systems also come equipped with an AMA Pro Racing sound insert pre-installed in the muffler, further optimizing its performance characteristics. It is important to note that this Yoshimura RS-4 exhaust system is specifically intended for closed-course competition use only and is not designed or approved for street use. The product fits the 2011, 2012, and 2013 Honda CRF250R models. Please be aware that the image displayed is representative and may vary slightly depending on your specific model.