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New Yoshimura exhausts for the all new 2017 Honda CRF450R/RX

Without a doubt the most anticipated Motocross and Off-Road bikes of 2017 have finally made their debut, the 2017 Honda CRF450R and CRF450RX have been released!
Introducing the all-new RS-9T exhaust system for the all new CRF450R and CRF450RX. The 2017 CRF450R's new engine and silencer configuration gave Yoshimura the opportunity to create an entirely new system built specifically for the new CRF450 machines.
Yoshimura has been working tirelessly on development with American Honda HRC's engineers to achieve maximum performance and mass centralization optimising rider usability. Yoshimura achieved all this while moving the rear silencer's all new RS-9T dual tapered shape forward to tuck in under the side number plates. Working with HRC race engineers and the all new 449cc Unicam engine and its unique downdraft fuel injection system, Yoshimura engineers were able to deliver an exhaust that provides more trackable power and improved torque.
This new RS-9T dual works with or without Honda's all new optional electric start system, and is available as a slip on kit or full system.

Some of the features on the new RS-9T dual CRF450R/RX system include:

  • 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 an overall broader range of power and better throttle response.
  • New divider creates a smoother exhaust flow and a better velocity to the right and left silencers
  • New compact forward positioned RS-9T dual silencer design provides lower center of gravity for better mass centralization
  • New RS-9T silencers have more volume than stock
  • Lager silencer volume provides decrease in dB level and better throttle response
  • Larger RS-9T core creates more power on mid and top end


Part Numbers and Prices:

       Slip On Kit
       Stainless Steel Silencers with Carbon End Caps
       225832R520  £698

       Full Stainless System
       Stainless Steel Headers and Silencers with Carbon End Caps
       225830R520  £877

       Full Titanium System
       Titanium Headers and Silencers with Carbon End Caps
       225831R720  £1436