Yoshimura · RS-4
The Yoshimura Spark Arrester Kit RS-4S Muffler, 1.500" is a replacement service part designed for RS-4 mufflers equipped with a turn-out end-cap. It provides a USFS Approved spark arrester solution for riders who need to restore or add the correct insert to their setup.
This kit is listed for Honda CRF250L 2013–2020 and Honda CRF250L-Rally 2017–2020 (see the fitment table below). An installation PDF is provided on the page, and Yoshimura also notes that it may be used as an optional spark arrester on applications that were not originally equipped with one; refer to the insert chart on the page to confirm the correct application.
Sound
Yoshimura lists this as a replacement USFS Approved spark arrester for RS-4 mufflers that use a turn-out end-cap. It’s intended to bring an RS-4 setup back to the proper configuration when the original spark arrester needs service or replacement.
Fitment
Built specifically around Yoshimura’s RS-4 muffler platform with a turn-out end-cap, this kit targets the correct style of end-cap interface for that configuration. Use the page’s insert chart reference to confirm fitment for the intended application.
Installation
Yoshimura supplies the components needed to install the spark arrester insert as a kit. The package includes the spark arrester insert, an end-cap collar, and a set screw, making it straightforward to replace missing or worn pieces.
This Yoshimura kit is categorized under Replacement Service Parts and is intended to support continued use of RS-4 mufflers with a turn-out end-cap. Rather than replacing an entire muffler, the spark arrester components can be serviced directly with the correct parts specified by Yoshimura for this configuration.
Fitment
Yoshimura lists this spark arrester kit for Honda CRF250L 2013–2020 and Honda CRF250L-Rally 2017–2020. Because insert fit can vary by application and muffler configuration, Yoshimura also advises checking the insert chart on the page to confirm the correct match before installation.
Installation
An installation PDF is available on the product page for additional guidance during setup. The kit’s included parts list—spark arrester insert, end-cap collar, and set screw—supports a direct replacement process for the RS-4 turn-out end-cap style noted by Yoshimura.
| Part Number | SA-13-K |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Series | RS-4 |
| Shipping Weight | 0.6 lb |
| Barcode | 00840025909359 |
| Make | Model | Model Years |
|---|---|---|
| Honda | CRF250L | 2013–2020 |
| Honda | CRF250L-Rally | 2017–2020 |
Fitment as listed by Yoshimura for part number SA-13-K.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
