Yoshimura 17-20 CRF450R/RX RS-9T FS SS/SS/CF Tips

Yoshimura has been working tirelessly on development with American Honda HRC's engineers to achieve maximum performance and mass centralization, to optimize rider usability

Yoshimura achieved all this by moving the RS-9T mufflers forward in order to tuck in under the side number plates

Dyno and track tested by Honda R&D in Japan, American Honda MX Team, and HRC All Japan MX Racing Team

3-stage stainless steel header provides broader overall range of power and throttle response

New stainless steel tail pipe divider creates smoother exhaust flow and better velocity to the right and left tail pipe

Larger RS-9T core creates improved throttle response, and power in mid and top end

New RS-9T mufflers have more volume than stock to provide a decrease in overall dB noise level

Works with or without Honda's new optional electric start system