Yoshimura · RS-2
The Yoshimura Sound Insert Kit RS-2 Mini Muffler 1.375" Ring (INS-25-K) is a replacement low-volume insert kit designed for RS-2 Mini Mufflers. It’s intended for riders who need an optional insert solution on applications that require different sound restrictions, with decibel reduction varying by application.
This kit is listed for Honda GROM 2014–2015, 2017–2020, Honda NAVI 2022–2026, and Kawasaki Z125-PRO 2017–2026. Confirm the correct application using the insert chart and the fitment table shown on the page before installation.
Sound
Built as a replacement low-volume insert kit for Yoshimura RS-2 Mini Mufflers, this service part offers an optional way to address sound restrictions that can vary by application. Because decibel reduction depends on the specific setup, confirming the correct insert choice for the intended motorcycle is recommended.
Fitment
This insert kit is specified as non-spark arrested. For riders and builders dialing in an RS-2 Mini Muffler setup, that designation is important when selecting the right components for a given application and intended use. Always verify fitment details using the resources shown on the page.
Included
The kit includes the low-volume insert tube, an end-cap collar, and a set screw. These parts are intended to support straightforward replacement of the insert hardware on compatible RS-2 Mini Mufflers while keeping the assembly matched to Yoshimura’s RS-2 series service-part design.
Sound
INS-25-K is part of Yoshimura’s Replacement Service Parts lineup for the RS-2 series, aimed specifically at RS-2 Mini Mufflers. It’s positioned as a replacement low-volume insert kit that can also be used as an optional kit where different sound restrictions apply. For the most accurate application match, reference the insert chart and the fitment information presented on the page.
Fitment
This sound insert kit is listed for Honda GROM 2014–2015, 2017–2020, Honda NAVI 2022–2026, and Kawasaki Z125-PRO 2017–2026. Since decibel reduction depends on the application, selecting the correct insert setup starts with verifying the motorcycle and model year. Review the fitment table and confirm insert selection using the insert chart before installing the components.
Installation
An installation PDF is provided on the product page to support proper installation of the insert tube, end-cap collar, and set screw. Following the supplied documentation helps ensure the parts are assembled as intended for RS-2 Mini Muffler applications. If there are questions about fitment or applications, Yoshimura notes that customers can contact their sales department for assistance.
| Part Number | INS-25-K |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Series | RS-2 |
| Shipping Weight | 0.25 lb |
| Barcode | 00840025909885 |
| Make | Model | Model Years |
|---|---|---|
| Honda | GROM | 2014–2015, 2017–2020 |
| Honda | NAVI | 2022–2026 |
| Kawasaki | Z125-PRO | 2017–2026 |
Fitment as listed by Yoshimura for part number INS-25-K.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
