Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Exhaust› Mufflers and Resonators
Yoshimura
Yoshimura RS-9T Muffler Dual Slip-On SS-AL-CF
SKU: 225832R520
Easy — 1–2 hours
Overview
Constructed with 304 stainless steel, these mufflers offer durability and a natural finish. They are equipped with carbon fiber end caps and feature a slant-cut outlet style. The RS-9T mufflers have increased volume over stock, contributing to a decrease in overall decibel levels while still delivering improved torque and more tractable power, as validated by dyno and track testing with racing teams.
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Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | Yoshimura |
| Part Number | 225832R520 |
| Category | Exhaust |
Videos
Yoshimura RS-9T Exhaust Review on the 2019 Honda CRF450R
2018 CRF450R Exhaust Comparison Stock vs Yoshimura RS-9
2020 CRF450R Yoshimura RS-9T Sound w/ Baffles Out (LOUD)
Yoshimura RS-9 Ti system install and review for 19' CRF450R
2021 Honda CRF450R Yoshimura RS12 Baffle Removal *(Extremely loud)*
2017 CRF450R stock exhaust vs Yoshimura RS-9 sound comparison
HRC's Power in Your Own Hands? | Yoshimura RS-12 Review - 2025 Honda CRF450R
2017 stock exhaust VS yoshimura exhaust SOUND
Superior Together Yoshimura RS-12 Exhaust and the 2021 Honda CRF450R/RX
2019 crf250r full yoshimura rs-9
About MOTORMIA
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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