Yoshimura Full Exhaust Crf450r/Rx 17-20 / Crf450r-S 2022 Rs-9t Stainless Stainless Mufflers 225840r520

Only 2 left
SKU: 225840R520 Order Code: 880798004844
Regular price $1,039.00 USD

Love our products?

Help us grow by sharing them with your friends on social media!

When you share our products, you're helping us reach more people and make our products available to everyone

The CRF450R's new engine and muffler configuration gave us the opportunity to create an entirely new system built specifically for the new CRF450 machines. Introducing our all-new Signature Series RS-9T tapered dual muffler exhaust system for the all new CRF450R.

Yoshimura has been working tirelessly on development with American Honda HRC's engineers to achieve maximum performance and mass centralization, to optimize rider usability. Yoshimura achieved all this by moving the new RS-9T mufflers forward in order 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 was able to deliver an exhaust that provides more tractable power and improved torque.

    Some features on the new RS-9T dual tapered muffler 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 broader overall range of power and 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
  • Larger RS-9T core creates improved throttle response, and power in mid and top end
  • New RS-9T mufflers have more volume than stock to provide a decrease in overall dB noise level
  • Works with or without Honda's new optional electric start system
  • Stainless Steel Header and Tail-pipe

This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product.

Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.

  • Honda CRF450R 2017
  • Honda CRF450R 2018
  • Honda CRF450R 2019
  • Honda CRF450R 2020
  • Honda CRF450R S 2022
  • Honda CRF450RX 2017
  • Honda CRF450RX 2018
  • Honda CRF450RX 2019
  • Honda CRF450RX 2020
  • Introducing Signature Series by Yoshimura - an offering of exhaust systems that a dealer can install with confidence. Our Signature Series lineup is the answer for today's dealer who is faced with a challenging marketplace. The applications for the Signature Series line cover the entire powersports spectrum, including many of our off-road applications. Every one of our Championship Winning Motocross exhaust systems and nearly all of our ATV/Side-by-Side applications are members of the Signature Series Family. All Signature Series components are tested, documented, and marked as required by federal and state regulations.


      For US customers, we offer 3 shipping options:

      • Free shipping for orders over $69. This shipping option takes 5-8 business days.
      • Economy for small orders (less than 1lbs) $6.99
      • This shipping option takes 5-8 business days. 
      • Standard shipping (FedEx / UPS) for all orders $9.99 
      • This shipping option takes 1-5 business days. 

      We are currently unable to offer   overnight or 2-day guaranteed shipping .

      This is because the warehouses of most of our suppliers only ship Ground.

      Products ship from our Miami facility or drop ship direct from our Suppliers

      Orders placed before 11am CST are typically will send the same day. 

      Most orders placed after that time are will send the following business days. 


      If you have specific shipping requests or needs please contact us at sales@bills-exhausts.com prior to purchasing and we will do our best to assist you.

      If an item is back ordered from the manufacturer you will be notified by us. FYI – We don’t like it when this happens any more than you do.

      We will try and help as best we can with back orders

      A TRACKING NUMBER will be send to you via email or text after purchasing .



      FREE STANDARD SHIPPING  on orders over $69 is available in all US lower 48 states, APO addresses, and Puerto Rico via USPS or UPS.  (*Exceptions apply for Alaska and Hawaii.)

      Free standard shipping means we will select an option that gets you your parts as soon as possible while still being economically priced.

      We reserve the right to deny free shipping for any reason.

      About pre-orders:

      When you order  PRE-ORDER it  means that you can purchase it before the official release date and then, you just wait for the shipping Usually pre-orders takes from 1-6 weeks depending the brand and the product. 


      Contact us when ordering or we will contact you to go over rates and times.


      WE SHIP WORLDWIDE Shipping rates outside the US are based upon destination and weight. 

      Canada and Puerto Rico Fast shipping with DHL Prepaid Customs/Taxes (DDP)

      •  Countries we don't collect  tax or duties required pay by you.

       (We cannot ship big size tires , oil ,batteries  and other heavy and big size items Internationally ONLY If you AGREE for LTL freight shipping, the final cost may differ from the amount shown at checkout due to additional fees.

      We will contact you for confirmation before processing your order. )


      If you have questions about these fees or duties contact us prior to ordering and we can assist you.

       -For international orders, customers who refuse the package will not receive a refund for the original shipping cost. Additionally, any return shipping fees incurred by us will be deducted from the customer's refund

       -Tires are not eligible for return.

       -Electronics are not eligible for return.

      More for Return policy here


      Delivery times for international shipments are typically 5 to 9 business days, but this can vary depending on your country’s customs procedures.

      Orders delayed by customs are not something we can control or change.


      ALL international orders(Includes CANADA and Puerto Rico) needed to be ship from our location in Miami Florida.

      Most of International orders cannot drop ship from supplier's warehouses(Except on some specific Brands)

      Parts typically arrive at our warehouse within 2-7 business days.

      Once parts arrive, we will email you a tracking number.

      The business days you see at checkout are how long it takes for your package to arrive after we ship it



      We accept  Visa, Mastercard, AMEX, ApplePay,GooglePay, and Discover credit cards  and Paypal , as well as debit cards with a Visa or Mastercard logo.



      Contact us at sales@bills-exhausts.com if you have any questions.

       *Products shipped within the state of Indiana are subject to a 7% sales tax.