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5420 DANIELS STREET STE A, CHINO CA., 91710 · (800)634-9166 · (909)628-4722 · FAX (909)591-2198
RS4 Slip-On Exhaust System
CAUTION: The muffler packing on this system MUST be replaced every 6-8
hours of use, or after each moto. Failure to follow recommended muffler re-
packing interval can cause muffler damage and may void the warranty.
NOTE: IN THE STATE OF CALIFORNIA, IT IS ILLEGAL TO MODIFY THE EMISSION CONTROL SYSTEM, WHICH INCLUDES THE CARBURETORS OF ANY VEHICLE.
RESEARCH&DEVELOPMENT OF AMERICA, INC.
www.yoshimura-rd.com
Qualified Manufacturer Declared "Replacement Part "
Yamaha
YZ250F
231032D320
Signature Series systems are:
• CARB/EPA tail-pipe emissions compliant.
• Marked with appropriate EPA noise labels.
• Independent laboratory tested for EPA new
vehicle noise compliance.
2024
(SS/AL)

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Summary of Contents for Yoshimura 231032D320

  • Page 1 5420 DANIELS STREET STE A, CHINO CA., 91710 · (800)634-9166 · (909)628-4722 · FAX (909)591-2198 www.yoshimura-rd.com Qualified Manufacturer Declared “Replacement Part ” Yamaha 2024 YZ250F 231032D320 (SS/AL) RS4 Slip-On Exhaust System Signature Series systems are: • CARB/EPA tail-pipe emissions compliant. • Marked with appropriate EPA noise labels.
  • Page 2: Assembly Diagram

    ALS-043 Exhaust Clamp 03019143 ** 8" x 10" Aluminum Heatshield Foil ALFOILHS-8X10 ** Low Volume Sound Insert, 1.625" (Installed) INS-10-K ** Offroad Endcap Plug 347PLUG ** Yoshimura Vinyl Sticker 17100 OPTIONAL REPLACEMENT PARTS Repack Kit REPACK-RS4-ADV Spark Arrester Kit SA-04-K...
  • Page 3: Installation

    4. Slide (No. 8) 03019143, exhaust clamp over Note : The stock midpipe heatshield clamp will Yoshimura tailpipe inlet. not be used with the Yoshimura slip-on exhaust system. 5. Carefully install (No. 1) 231032D320-RMA, Yoshimura muffler assembly over the stock Installation midpipe.
  • Page 4 If any problem is found, please carefully follow through the installation steps again. If problem still persists, please call Yoshimura Tech Department at (800) 634-9166 / in CA (909) 628-4722. 15. It is recommended that the muffler and tailpipe be wiped down with rubbing alcohol to remove oil and fingerprints.
  • Page 5: Exhaust System Maintenance

    Dear Yoshimura Customer, Congratulations and thank you for purchasing a Yoshimura Exhaust System. Over six decades of experience in research and development, state of the art machinery, materials and craftsmanship of the highest quality all come together in a product of exceptional quality and performance—in other words, this is the best thing you can put on your bike.
  • Page 6 When you are performing periodic maintenance on your vehicle (like a tire change, or an oil change) you can remove your Yoshimura muffler from the vehicle and weigh it again.
  • Page 7 (found on header and tail-pipe components). 6. Also, feel free to ask through online e-mail at sales@yoshimura-rd.com, or fax your question/problems to (909) 591- 2198. To obtain technical information directly from Yoshimura, call (909) 628-4722.

This manual is also suitable for:

Signature series

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