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Product image 1KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish
Product image 2KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish
Product image 3KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish
Product image 4KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish
Product image 5KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish
Product image 6KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish
Product image 7KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish
Product image 8https://www.youtube.com/embed/JnGM8qu7JIo?rel=0

*Product may vary by application

KTM 390 DUKE 17-19 / RC390 17-19 Race R-77 3QTR SS-SS-CF Works Finish

SKU: 16381CJ520

Regular price $526.31

MADE IN USA

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Apparel $29 and up

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Race Series Exhaust System


By filling out the form below you acknowledge that the item being purchased is for racing only and this vehicle will never be used on public roads or land.

The product that you are purchasing is designed and intended for closed course competition use only and is labeled as such, i.e. Yoshimura "RACE SERIES." Yoshimura RACE SERIES products are neither designed nor intended for use on PUBLIC ROADS or LAND. Such use is prohibited by Federal and State regulations.

I have read, understood, and agree to Use Restriction Terms.



(Payment Options Available at Check Out)


Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "MODIFIED PART"


WARNING: Cancer and Reproductive harm - www.p65warnings.ca.gov


The KTM RC390 and 390 Duke are entry level bikes that can quickly be transformed into potent race bikes/track day machines. Yoshimura has pumped up the looks and performance on these small, yet fun bikes with our Race Series 3/4 systems in stainless/carbon Mini R-77 muffler options.

When heading to the race track, everything counts, with either muffler option you loose half the weight of the stock system and gain 2.5% max H.P. and 3.3% max ft. lbs. of torque. Styling and sound are all Yoshimura with our classic R-77 profile muffler. We've made the performance, now its time for you to realize the power!

Proudly made in the USA.

Instructions and Parts Diagram
Instructions / Parts Diagram

Race Series Exhaust System

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FOR CLOSED COURSE COMPETITION ONLY; NOT INTENDED FOR STREET USE

If you're looking for that competitive edge, look no further than our Race Series. These exhaust systems are designed with nothing but power in mind. Each Race Series system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide.

Works Finish Explained

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New Yoshimura Works Finish takes on a unique coloring after it goes through a heat cycle on the motorcycle that looks much like those titanium works components our factory racers use.

  • Contemporary Satin/matte finish
  • Uniform heat coloration
  • Increased fatigue strength
  • Increased scratch and stain resistance

Vehicle Fitment

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  • KTM 390 DUKE 2017
  • KTM 390 DUKE 2018
  • KTM 390 DUKE 2019
  • KTM RC390 2017
  • KTM RC390 2018
  • KTM RC390 2019
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