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Description
FMF Q4 HEX Muffler KTM 350/450 SX-F 2018-2022 045627 1821-1919The Q4 employs intricate chambers, baffles and proprietary multistage packing material With the Q4 you dont need to hear the power, just feel the power! Less sound equals more ground Power gains throughout the entire rpm range Spark arrestor included Pounds lighter than stock Rugged design for off road endurance Made in the U. S. A. Offroad '22 Not for '18 250 450 SXF XCF models 2019 2022 Husqvarna FC 350 2019 2022 Husqvarna FC 450 2019 2022 Husqvarna
- The Q4 employs intricate chambers, baffles and proprietary multistage packing material
- With the Q4 you don’t need to hear the power, just feel the power!
- Less sound equals more ground
- Power gains throughout the entire rpm range
- Spark arrestor included
- Pounds lighter than stock
- Rugged design for off-road endurance
- Made in the U.S.A.
Offroad '22 - Not for '18 250/450 SXF/XCF models
| 2019-2022 | Husqvarna | FC 350 | - | - |
| 2019-2022 | Husqvarna | FC 450 | - | - |
| 2019-2022 | Husqvarna | FX 350 | - | - |
| 2019-2022 | KTM | 250 SX-F | - | - |
| 2019-2022 | KTM | 450 XC-F | - | - |
| 2019-2022 | KTM | 250 XC-F | - | - |
| 2019-2022 | Husqvarna | FC 250 | - | - |
| 2019-2022 | Husqvarna | FX 450 | - | - |
| 2019-2022 | KTM | 450 SX-F | - | - |
| 2019-2021 | KTM | 450 SX-F FE | - | - |
| 2018-2022 | KTM | 350 SX-F | - | - |
| 2018-2022 | KTM | 350 XC-F | - | - |
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Highly recommend
Is a great product, it fit perfectly, the materials are great.
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Reviewed in the United States on April 7, 2026
★★★★★ 4
Looks great
Size: Large, Color: Black
Looks great, comfortable to wear, love that the buttons are the same color as the shirt, easy to wash, appears to be durably made.
Significantly exceeded expectations (I ordered 2 more).
4 stars instead of 5 because it’s possible to move your arms in a way that makes the shirt slightly tight in the bicep area, but that’s unnoticeable almost all of the time (and minor anyway). Note: even after a couple of wash - wear - wash cycles, there were creases along the same places as where the shirt was shipped; this was easily remedied by a quick iron on a low setting and I think reflects that it is quite resistant to wrinkles.
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Reviewed in the United States on February 26, 2025
★★★★★ 3
Nice shirt.
Size: Large, Color: Pacifico
Decent shirt but not as soft as you would think.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
It's for his sister graduation
Size: Small, Color: Pink
It fits my son perfectly
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Cool shirt
Size: XX-Large, Color: Black
Great shirts really comfortable
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Reviewed in the United States on May 14, 2026