Her kommer Yoshimura's egen beskrivelse av anlegget;

Dyno and track tested by Honda R&D in Japan, American Honda MX team, and HRC All Japan MX Racing team.
3-stage header provides overall broader range of power and better throttle response.
New tail pipe divider creates smoother exhaust flow and better velocity to the right and left tail pipe.
New compact forward positioned RS-9T dual muffler design provides lower center of gravity for better mass centralization.
New RS-9T mufflers have more volume than stock.
Larger muffler volume provides decrease in dB level and better throttle response.
Larger RS-9T core creates more power on mid and top end