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Product image 1KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF
Product image 2KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF
Product image 3KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF
Product image 4KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF
Product image 5KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF
Product image 6KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF
Product image 7KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF
Product image 8KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF

*Product may vary by application

KTM 450SX-F / Husq FC450 2018-20 Signature RS-4 FS SS-AL-CF

SKU: 264620D320

Regular price $768.42

MADE IN USA

Signature Series Exhaust System


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Apparel $29 and up

1-Year
Warranty

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Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"


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


We developed the RS-4 in the R&D lab called the Motocross track. The RS-4 boasts its own resonance chamber and utilizes its volume and a unique baffling system to create the sound and power that is purely Yoshimura. With 450's it's not all about creating more power, it's about creating more usable power and the RS-4 makes it happen. Max power is increased by 2.3% and max torque is increased by 1.2% throughout the power curve. Grip it and rip it!

Proudly made in the USA.

* Yoshimura Stainless Full System weight: 7.9 lbs. vs Stock Weight: 8.1 Lbs

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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  • KTM 450SX F 2020
  • KTM 450SX F FACTORY EDITION 2018
  • KTM 450XC F 2019
  • KTM 450XC F 2020
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