For RS-12 Mufflers
Built as a replacement low-volume insert kit for Yoshimura RS-12 mufflers. It’s positioned within Yoshimura’s Replacement Service Parts line for servicing or updating an RS-12 muffler setup where a low-volume insert is desired.
Yoshimura · RS-12
The Yoshimura SOUND INSERT KIT RS-12 Muffler, 1.625" (INS-38-K) is a replacement low-volume insert kit designed specifically for RS-12 mufflers. It’s intended for riders who need an optional sound-restriction change on applications that call for different sound requirements.
This kit is identified by Yoshimura as non-spark arrested, and the amount of decibel reduction will vary by application. For application-specific confirmation, refer to the insert chart shown on the page and the included installation PDF link for guidance.
Built as a replacement low-volume insert kit for Yoshimura RS-12 mufflers. It’s positioned within Yoshimura’s Replacement Service Parts line for servicing or updating an RS-12 muffler setup where a low-volume insert is desired.
Yoshimura notes this insert can be used as an optional kit on applications that require different sound restrictions. Because sound output can vary by setup, decibel reduction depends on the specific application.
The kit includes the low-volume insert tube, an end-cap collar, and a set screw. These pieces are intended to work together as the insert assembly for RS-12 mufflers.
Sound
Yoshimura’s INS-38-K sound insert kit is intended as a low-volume insert option for RS-12 mufflers. It can also serve as a replacement service part when an existing insert assembly needs to be refreshed. Yoshimura indicates it’s offered for applications that require different sound restrictions, making it a practical option when a setup calls for a change in sound control.
Fitment
This insert kit is listed by Yoshimura as non-spark arrested. Yoshimura also explains that decibel reduction depends on application, so results can differ based on the specific muffler setup and application details. To avoid mismatches, the page’s insert chart is the recommended reference to confirm correct fitment for a particular application.
Installation
The kit comes with the low-volume insert tube, end-cap collar, and set screw, providing the core pieces needed for the insert assembly. For install guidance, the page includes an installation PDF link.
| Part Number | INS-38-K |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Series | RS-12 |
| Shipping Weight | 1 lb |
| Barcode | 00840025914513 |
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
