The YOSHIMURA Fits RS-12 Exhaust System is specifically designed for the Honda CRF450X and CRF450R models. This high-quality product from Yoshimura, a well-known brand in the motorcycle industry, ensures a perfect fit and optimal performance for your bike. With the manufacturer part number 225860S520, you can trust that this exhaust system will enhance the sound, power, and overall look of your motorcycle, making it a must-have accessory for any rider looking to upgrade their bike's performance.