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Yoshimura RS-9T Signature Series Dual Full System - Stainless Steel Muffler - 225840R520

Was: $989.00
Sale: $965.21
Save: 2%
Save: $23.79

Free Ground Shipping (1 - 5 Days)


The Signature Series lineup is the answer for todays dealer who is faced with a challenging marketplace. The applications for the Signature Series line cover the entire powersports spectrum, including many off-road applications. All Signature Series components are tested, documented, and marked as required by federal and state regulations.
CARB/EPA tail-pipe emissions compliant
All applications are marked with appropriate EPA noise emissions labels
Certified by an independent laboratory for EPA noise compliance
Yoshimura has been working tirelessly on development with American Honda HRCs 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. Working with HRC race engineers and the 449cc Unicam engine and its unique downdraft fuel injection system, Yoshimura was able to deliver an exhaust that provides more tractable power and improved torque.
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 broader overall range of power and throttle response
Tail pipe divider creates smoother exhaust flow and better velocity to the right and left tail pipe
Compact forward positioned RS-9T dual muffler design provides lower center of gravity for better mass centralization
Larger RS-9T core creates improved throttle response, and power in mid and top end
RS-9T mufflers have more volume than stock to provide a decrease in overall dB noise level
Works with or without Hondas new optional electric start system

Product Series

Application List

2017 - 2020HondaCRF450RNone
2017 - 2020HondaCRF450RXNone


  • 225840R520
  • 225840R520
  • Yoshimura
  • Available
  • New


Shipping Information

  • Item Requires Shipping
  • Free Ground Shipping (1 - 5 Days)

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