Yoshimura · RS-2
The Yoshimura Spark Arrester Kit for RS-2 off-road mufflers is a replacement USFS approved spark arrester designed for RS-2 applications using a 1.500" insert size. It’s intended for riders who need to replace a worn or missing spark arrester, or add one to certain RS-2 off-road muffler setups that were not originally equipped with a spark arrester.
This kit is listed for Honda CRF150R-B 2007–2025 and Yamaha YFZ450R 2009–2022 (see the fitment table below). For application confirmation, refer to the insert chart shown on the page.
Yoshimura supplies this kit as a replacement USFS approved spark arrester for RS-2 off-road mufflers. It’s built to restore the correct spark arrester setup on compatible RS-2 systems when servicing or updating an existing muffler configuration.
The Spark Arrester Kit includes the spark arrester insert, an end-cap collar, and a set screw. These components are provided together to support straightforward replacement of the spark arrester parts used on RS-2 off-road mufflers.
Beyond direct replacement, Yoshimura notes this spark arrester can be used as an optional add-on for applications that did not originally come equipped with a spark arrester. Checking the insert chart is recommended to confirm the correct match for a specific setup.
Sound
This Yoshimura service part is built specifically around the RS-2 series off-road muffler format. With a stated 1.500" size, it targets the RS-2 spark arrester insert configuration rather than a general-purpose insert. For the most accurate application check, the insert chart on the page can be used to confirm fitment details for the intended muffler setup.
Fitment
Fitment for this kit is provided for Honda CRF150R-B 2007–2025 and Yamaha YFZ450R 2009–2022. Because spark arrester and insert setups can vary by application, Yoshimura recommends confirming fitment using the insert chart referenced on the page before installation.
Installation
An installation PDF is provided on the page for this spark arrester kit, offering guidance during service and assembly. With the insert, end-cap collar, and set screw included, the kit is intended to support a proper replacement process using the referenced installation document.
| Part Number | SA-03-K |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Series | RS-2 |
| Shipping Weight | 0.7 lb |
| Barcode | 00840025909274 |
| Make | Model | Model Years |
|---|---|---|
| Honda | CRF150R-B | 2007–2025 |
| Yamaha | YFZ450R | 2009–2022 |
Fitment as listed by Yoshimura for part number SA-03-K.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
