234852S320
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.
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Sound Level
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Volume Insert | Spark Arrestor | Included |
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SA-21-K |
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Yes |
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SA-20-K |
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No
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INS-33-K | No |
| Product Instructions | Instructions / What's Included PDF |







