Product Variation
![]() SSF (Satin Finish cover) Parts No.110-47H-5L30 |
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![]() SM (Metal Magic cover) Parts No.110-47H-5L20 |
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![]() STB (Titanium Blue cover) Parts No.110-47H-5L80B |
Product Description
The RS-4J is a dedicated off-road exhaust with its roots in competition motocross mufflers developed in the USA.
Component part
Main Material | Stainless |
Static Noise Decibel : dB/ Measured at : rpm |
89dB / 4,500rpm (8BK-MD47) |
90dB / 4,500rpm (2BK-MD47) |
![](https://www.yoshimura-jp.com/files/graph1/1688448316_968a017c6fb073aacf4942badf86a33c.gif)
![](/wp/wp-content/uploads/2023/12/1636966882_7e37e8af010b41ccc826089e954440ef.gif)
Compatible models & model years
CRF250L | 2023 / 2021 |
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CRF250 RALLY | 2023 / 2021 |