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5420 DANIELS STREET STE A, CHINO CA., 91710 · (800) 634-9166 · (909) 628-4722 · FAX (909) 591-2198
You must know how to remove and replace your stock exhaust in order to install this product
otherwise have it installed by a professional mechanic. Keep all stock parts from your existing
system as some components may be necessary to install your new Yoshimura exhaust depending
on the application. Read through all instructions before beginning installation. Exhaust system can
be extremely hot. Let motorcycle cool down before beginning installation. Always wear hand and
eye protection and take precautionary measures to avoid injury.
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 "
2021 ~ 2022
Honda CRF450R/RX
225850S320
225851S720
RS -12 Taper Full-System
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.
(SS/SS)
(Ti/Ti)
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Related Manuals for Yoshimura Signature Series
Summary of Contents for Yoshimura Signature Series
- Page 1 Keep all stock parts from your existing system as some components may be necessary to install your new Yoshimura exhaust depending on the application. Read through all instructions before beginning installation. Exhaust system can be extremely hot.
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Page 2: Assembly Diagram
Assembly Diagram Item Description Qty. 22585-104 Yoshimura SS Header 22585-705 Yoshimura Ti Header 22585-144 Yoshimura SS Tailpipe 22585-745 Yoshimura Ti Tailpipe 225850S320-RMA Yoshimura SS Muffler 225851S720-RMA Yoshimura Ti Muffler M8X25H 8mm x 25mm Flanged Hex Head Bolt 8MMNUT 8mm Flange Nut... -
Page 3: Installation
5. Torque tailpipe chassis mount bolt to factory Note : If exhaust port studs are bent, the specification. Yoshimura header flange may not fit and the bent studs must be removed from the 6. Torque muffler mount bolt to factory cylinder head prior to installing the specification. - Page 4 Stock steps again. If problem still persists, please call Stud Yoshimura Tech Department at (800) 634-9166 / in CA (909) 628-4722. 11. It is recommended that the muffler and tailpipe be wiped down with rubbing alcohol to remove oil and fingerprints.
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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.