The BTO Advantage

Yoshimura RS-4D Exhaust

RS-4D and RS4D Exhaust Accessories

Increased airflow, smoother power delivery, increased throttle control - all of these qualities can be found in the Yoshimura RS-4D Exhaust. Used and trusted by Factory Honda, the Yoshimura RS-4D boosts power and torque throughout the entire power curve. This is exhaust was built with one thing in mind: winning championships. If you are looking for the ultimate upgrade, slap on a Yoshimura RS-4D exhaust on to your bike today.