Exhaust› Exhaust Pipes, Systems and Components

Yoshimura

RS-4 Stainless Full Exhaust

$939.00

SKU: 224500D320

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Yoshimura RS-4 Stainless Full Exhaust is a replacement exhaust system designed for the Honda CRF450X 2019-2026. This system aims to improve power across all areas while making the motorcycle easier to ride. It offers significant weight reduction compared to the stock system and includes a USFS-approved spark arrester. The exhaust is proudly made in the USA and comes with a 1-year warranty.
Show original supplier description
The Yoshimura RS-4 Stainless Full Exhaust System is engineered to enhance the performance of the Honda CRF450X, specifically for the 2019-2026 model years. A key benefit is the massive weight reduction achieved with the full system, contributing to improved overall handling and performance. Constructed with stainless steel and featuring an aluminum muffler, this RS-4 system is built for durability and performance. It includes a USFS-approved spark arrester, ensuring compliance with forest regulations and maintaining "forest-friendly" noise levels. The "Emissions Compliance Declaration" states it is a "REPLACEMENT PART" from a "QUALIFIED MANUFACTURER." This product was designed and tested for compatibility with standard, factory-equipped motorcycles. The manufacturer notes that OE and aftermarket accessories not found on a factory-delivered bike may not be compatible. Furthermore, this product is intended for the U.S. marketplace only, and compatibility may vary in other regions. It is important to note that this system does not fit CRF450R, CRF450RX, or CRF450RWE models. While one customer reported it "almost fit on the RL like a glove," it is primarily designed for the CRF450X. The system is proudly made in the USA and backed by a 1-year warranty.

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

BrandYoshimura
Part Number224500D320
CategoryExhaust
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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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Shipping

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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