Yoshimura · RS-9
The Yoshimura Spark Arrester Kit RS-9 Muffler, 1.125" (SA-14-K) is a replacement service part designed for RS-9 off-road mufflers. It provides a USFS approved spark arrester solution for riders who need to replace a worn insert or add an optional spark arrester to an application not originally equipped with one.
This kit is listed for Honda CRF250R 2020–2021 and Honda CRF250RX 2020–2021 (see the fitment table below). Dual muffler systems require two spark arrester kits. For application-specific confirmation, refer to the insert chart shown on the page.
This kit includes one replacement USFS approved spark arrester intended for use with Yoshimura RS-9 off-road mufflers. It is positioned as a service replacement option when an existing spark arrester needs to be refreshed, or as an optional spark arrester on applications that did not originally include one.
The package contents are configured to support installation on the muffler end-cap area. The kit includes 1 x Spark Arrester Insert, 1 x End-cap collar, and 1 x Set screw, helping ensure the replacement is secured using the parts specified for the assembly.
For bikes configured with dual muffler systems, Yoshimura specifies that two spark arrester kits are required. This makes it easier to order the correct quantity for the exhaust setup, whether replacing existing components or adding spark arresters where they were not originally equipped.
Sound
Yoshimura lists this component in its Replacement Service Parts line for the RS-9 series. The Spark Arrester Kit RS-9 Muffler, 1.125" is intended specifically for RS-9 off-road mufflers and is supplied as a dedicated kit rather than a loose insert, pairing the spark arrester insert with the associated end-cap collar and set screw.
Fitment
This spark arrester kit is listed for Honda CRF250R 2020–2021 and Honda CRF250RX 2020–2021. Because spark arrester and insert configurations can vary by application, Yoshimura recommends confirming fitment using the insert chart referenced on the page. For install guidance, the installation PDF is provided on the product page.
As a replacement spark arrester for RS-9 off-road mufflers, this kit is set up to streamline parts selection during maintenance. Yoshimura notes that it can also be used as an optional spark arrester on applications that were not originally equipped with one, and clarifies ordering needs for dual muffler systems by specifying that two kits are required.
| Part Number | SA-14-K |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Series | RS-9 |
| Shipping Weight | 0.4 lb |
| Barcode | 00840025909366 |
| Make | Model | Model Years |
|---|---|---|
| Honda | CRF250R | 2020–2021 |
| Honda | CRF250RX | 2020–2021 |
Fitment as listed by Yoshimura for part number SA-14-K.
Instructions / What's Included (PDF)
Provided by Yoshimura. Opens in a new tab.
