Yoshimura · RS-2
The Yoshimura SOUND INSERT KIT 94db for RS-2 Mufflers is a replacement low-volume insert kit designed for select RS-2 applications. It’s intended for riders who need an optional insert setup when different sound restrictions apply, with decibel reduction varying by application.
This kit is listed for Honda CRF150R-B 2007–2025, Honda CRF450R 2007–2008, Honda XR150L 2023–2026, Suzuki RM-Z450 2005–2007, and Yamaha WR125R 2026. For exact application confirmation, refer to the fitment table and the insert chart guidance noted in the product details.
Sound
Built as a replacement low-volume insert kit for Yoshimura RS-2 mufflers. It’s also offered as an optional kit on applications that require different sound restrictions, helping tailor the setup to the needs of a specific application.
Fitment
This insert kit is listed as Non-Spark Arrested. It is intended specifically as a low-volume insert option for compatible RS-2 mufflers, rather than a spark arrester solution.
Installation
The kit includes the key components needed for installation: a Low-Volume Insert Tube, an end-cap collar, and a set screw. An installation PDF is provided on the page to support correct fitment and setup.
Sound
This Yoshimura replacement service part is designed specifically for RS-2 muffler applications that call for a low-volume insert. It is positioned as an optional kit where different sound restrictions may be required, giving a straightforward way to configure the muffler for the intended application.
Fitment
Fitment is provided for specific models and years, including Honda CRF150R-B 2007–2025, Honda CRF450R 2007–2008, Honda XR150L 2023–2026, Suzuki RM-Z450 2005–2007, and Yamaha WR125R 2026. Because decibel reduction depends on application, the product details advise confirming fitment using the insert chart guidance and the fitment information shown on the page.
Installation
An installation PDF is available on the page for this insert kit, supporting proper assembly and placement. The kit’s listed components include the low-volume insert tube, end-cap collar, and set screw, providing the parts called out for completing the insert installation.
| Part Number | INS-12-K |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Series | RS-2 |
| Shipping Weight | 1 lb |
| Barcode | 00840025910416 |
| Make | Model | Model Years |
|---|---|---|
| Honda | CRF150R-B | 2007–2025 |
| Honda | CRF450R | 2007–2008 |
| Honda | XR150L | 2023–2026 |
| Suzuki | RM-Z450 | 2005–2007 |
| Yamaha | WR125R | 2026 |
Fitment as listed by Yoshimura for part number INS-12-K.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
