*Product may vary by application
Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"
WARNING: Cancer and Reproductive harm - www.p65warnings.ca.gov
Description
Our brand-new offering for the 2026 Yamaha YZ-450F is ready for action. Introducing the RS-12 Signature Series Slip-On—lightweight, compact, and built to deliver serious power.
This RS-12 is USFS approved and comes equipped with a spark arrestor installed, so you’re ready to ride the woods or trials right out of the box.
Featuring a stainless steel mid-pipe paired with an aluminum muffler and finished with a matte carbon fiber end cap, every detail is built for performance and durability.
Proudly engineered, developed, and built in Chino, CA.—Yoshimura quality you can count on.
Sound Insert/Spark Arrester Options
|
Sound Level
|
Volume Insert | Spark Arrestor | Included |
 |
SA-21-K | Yes | |
 |
SA-20-K | No |
|
 |
|
INS-33-K | No |
. . . . .
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.
Instructions / What's Included PDF