Yoshimura has been the official exhaust supplier to Team Honda Racing for several years now. All of that experience has helped
Yoshimura in making an exhaust that compliments an already great bike.
The RS-4D not only increases power and is light weight, but it also has
a lower centralized mass coefficient to provide better handling.
Additionally, an overall improvement to the big Honda's power delivery
was also realized.
The new RS-4D builds on the technology that has made the RS-4 a force to
be reckoned with on the racetrack, enhancing it's rock solid
performance. By increasing the amount of open area at the exhaust
outlet, the RS-4D increases airflow, resulting in smoother power
delivery and increased throttle control. Testing has shown
that it offers increased horsepower and torque throughout the power
curve, especially in the bottom to mid RPM range.
Titanium Systems come with an AMA Pro Racing sound insert installed in the muffler.
Low-Volume Insert and Spark Arrestor Chart