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Product image 1YZ450F 18-19/WR450F 19-20 RS-4 Titanium Full Exhaust, w/ Titanium Muffler
Product image 2YZ450F 18-19/WR450F 19-20 RS-4 Titanium Full Exhaust, w/ Titanium Muffler
Product image 3YZ450F 18-19/WR450F 19-20 RS-4 Titanium Full Exhaust, w/ Titanium Muffler
Product image 4https://www.youtube.com/embed/k2X85qcDBDY?rel=0
Product image 5https://www.youtube.com/embed/F6yQJ_VRIeg?rel=0

*Product may vary by application

YZ450F 18-19/WR450F 19-20 RS-4 Titanium Full Exhaust, w/ Titanium Muffler

SKU: 234821D720

Regular price $1,079.00

MADE IN USA

Signature Series Exhaust System


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Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"


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


For 2018 Yamaha made some major refinements to the already potent YZ450F. Adding to the usable and tractable power is how we make the new YZ450F even better.

Now there can be more power to rip holeshots, yet making the bike user friendly at the end of the moto when your right hand gets a little frisky.The new Yoshimura RS-4 Signature Series full system adds 2.8% more h.p. and 1.4 ft-lb. more torque to give the rider better, more linear throttle response.

Proudly made in the USA!

Instructions and Parts Diagram
Instructions / Parts Diagram

Signature Series Exhaust System

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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. Everyone of our Championship Winning Motocross exhaust systems and nearly all of out ATV/Side-by-Side applications are all members of the Signature Series Family. All Signature Series components are tested, documented, and marked as required by federal and state regulations.

Vehicle Fitment

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  • Yamaha WR450F 2019
  • Yamaha WR450F 2020
  • Yamaha YZ450F 2018
  • Yamaha YZ450F 2019
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