Yoshimura - RS-9T Full System (Honda)

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    Yoshimura - RS-9T Signature Series Full System (Honda)

    Introducing the all-new RS-9T exhaust system for the all new CRF 250R, CRF450R, and CRF450RX.

    The Yoshimura RS-9T Signature Series Full System is not only a feast for the eyes, but also a beast for your ride. Yoshimura has done it again. They have worked long and hard, picking apart the brand new 2017 Honda CRF450R and the 2017 CRF450RX dirt bikes in order to create one of their most productive full systems in moto yet.

    The RS-9T exhaust system is entirely new, and is the fruit of Yoshimura and American Honda HRC’s labor. The two teams of engineers were able to create something that is able to achieve maximum performance and mass centralization for your dirt bike. The new Honda Crf450R and Crf450RX have entirely new muffler and engine configurations, which necessitates an entirely new system. The Yoshimura RS-9T Signature Series Full System features a dual tapered shape rear muffler that is moved forward to tuck in under the side number plates. Yoshimura’s ingenuity is bar none, outstanding in the motocross world. With the help of the HRC Race Engineers, Yoshimura was able to work with the new 449cc Unicam engine and its unique downdraft fuel injection system to create an incredible feat of mechanics. This Full System features an exhaust that provides more trackable power and improved torque. Another new feature Yoshimura worked with was Honda’s new optional electric start system. Their talented engineers were able to make the RS-9T work with or without the system. This system has been dyno and track tested by Honda Research and Development in Japan, the HRC All Japan Motocross Racing Team, and the American Honda Motocross Team, giving the Yoshimura RS-9T Full System an air of legitimacy.

    Some race improvements include a 3 stage header that provides a wide range of power and an improved response form the throttle. This allows you to grab as much power as you want, at any level. The brand new tail pipe divider creates a more even, smoother exhaust flow to the right and left tail pipe. Predictable power in your tail pipes has never been better. The Yoshimura RS-9T Signature Series Full System for Honda dirtbikes feature larger mufflers that have more volume than stock and gives a decrease in decibal level and better throttle response. Not only will you be getting your power smoother, but the core creates more power on the mid and top end, giving you that speed you need to grab that first place finish at the dirt track.

    The RS-9T Full Systems all come with Carbon Fiber Tips for that extra fast and light feel. There are 2 trim levels. You can choose from the classic Stainless Steel performance, or go for that Titanium for that extra speed and strength.

    Find the Yoshimura RS-9T Signature Series Full System for Honda at BTO Sports, where we have all your exhaust, muffler, and end cap needs! We have the best prices on Yoshimura products, and we pride ourselves on having a varied selection of full systems and slip-ons for your bike. While this particular offering from Yoshimura is for the 2017 Honda CRF450R and CRF450RX, we also carry parts for KTM, Yamaha, Kawasaki, Suzuki, and Husqvarna as well. Be sure to check BTO often for the latest dirt bike parts like the Yoshimura RS-9T Honda Full System.


    • 3 stage header provides overall broader range of power and better 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
    • New RS-9T mufflers have more volume than stock
    • Lager muffler volume provides decrease in dB level and better throttle response
    • Larger RS-9T core creates more power on mid and top end