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Product image 1KX250F 17-20 RS-4 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 2KX250F 17-20 RS-4 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 3KX250F 17-20 RS-4 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 4https://www.youtube.com/embed/gSBb5krOaxk?rel=0

*Product may vary by application

KX250F 17-20 RS-4 Stainless Full Exhaust, w/ Aluminum Muffler

SKU: 242930D320

Regular price $619.00

MADE IN USA

Signature Series Exhaust System


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1-YEAR
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Same day shipping on In Stock items placed Mon-Fri by 4:00 pm PST.


Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"


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


The work that went into developing the RS-4 muffler has paid big dividends in Off-road Racing; winning multiple Supercross and Motocross titles since it's inception. We've developed the current generation RS-4 based on that research & development, and the result is a unique design that provides an unrivaled combination of power and quiet exhaust tone. The RS-4 features a Polyresonant duplex chamber and two-staged stepped baffle for increased performance, while a carbon cone end cap finishes off its innovative styling.

  • Pentagonal-shaped sleeve
  • Front muffler cap functions as a polyresonant chamber which helps reduce noise
  • Two-stage stepped baffle
  • Carbon fiber end-cap
  • Stainless steel header and tail-pipe
  • Weight: 0.4 lbs lighter than stock configuration
  • Repack Kits, optional Inserts and Spark Arresters are available for all models
Instructions and Parts Diagram
Instructions / Parts Diagram

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.

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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  • Kawasaki KX250F 2017
  • Kawasaki KX250F 2018
  • Kawasaki KX250F 2019
  • Kawasaki KX250F 2020
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