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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
FMF Racing KTM 350SXF/450SXF/FE Q4 S/AThe FMF 4 Stroke Q4 Muffler is a high performance exhaust component designed specifically for KTM 350SXF, 450SXF, and FE models. Engineered by FMF Racing, a trusted name in the world of motorsport performance parts, this muffler offers a perfect blend of power enhancement and exhaust tuning for enthusiastic riders looking to maximize their bike's potential. Crafted with precision, the Q4 Muffler focuses on improving exhaust flow while maintaining a
The FMF 4-Stroke Q4 Muffler is a high-performance exhaust component designed specifically for KTM 350SXF, 450SXF, and FE models. Engineered by FMF Racing, a trusted name in the world of motorsport performance parts, this muffler offers a perfect blend of power enhancement and exhaust tuning for enthusiastic riders looking to maximize their bike's potential.Crafted with precision, the Q4 Muffler focuses on improving exhaust flow while maintaining a deep, aggressive sound typical of FMF's signature style. Its construction ensures durability and performance longevity even in demanding off-road riding conditions.
Whether you are upgrading your dirt bike for competition or casual trail riding, this FMF muffler promises a noticeable boost in throttle response and overall engine efficiency. As part of the tuning supply range, it benefits from competitive pricing and fast European shipping, backed by enthusiast-driven support from the Tuningsupply team.
Installation is straightforward thanks to its exact fitment for compatible KTM models, making it an excellent choice for both individual riders and professional workshops focused on performance upgrades. Enhance your bike's performance and sound today with the FMF 4-Stroke Q4 Muffler, the ideal exhaust upgrade for passionate KTM owners.
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
4.1 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
What A Find! Unbelievable Quality and Price!
Special Size: Standard, Size: Large, Color: Plaid-light Blue
I can't believe the quality of this shirt!! I ordered the blue checked one for my husband for a costume. The price was right and I didn't expect much, as it was just for a costume. It came packed into a little box, which I figured showed it would be super thin and cheaply made, but didn't really care as only needed it for one time. Woah!!!! I opened the box and was absolutely floored by the quality and heft to the material. It is crazy. I don't know how they get this shirt into that box, but it is baffling. This shirt is of high quality, with all the seems sewn well. The fabric is every bit as good as the brand of oxford shirt that costs 3 times the price of this one. My husband goes between medium and large. He takes 16" neck in dress shirts. We ordered the large and it fits well. Has a little room, but not in a too big type of way. I washed it once before wearing, and it washed well. Not much shrinking at all. It ironed very easily without a problem. Yes, it is 100% percent cotton. Because of the quality and fit, I will now order additonal colors. My husband loves this shirt. This is an excellent buy!!!
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Reviewed in the United States on August 30, 2025
★★★★★ 5
Great shirt!
Special Size: Standard, Size: X-Large, Color: Dark Green
My partner loves this shirt and is very particular. He likes the green color and that it is cotton. Bought more colors from this company. Runs true to size.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Great shirt
Special Size: Standard, Size: Large, Color: Dark Green
Very nice fit, great color. Seems like it'll last a long time. I used it for St paddies day but will be wearing it a lot more. Love the style of it. Comfortable martial too
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Nice shirt!
Special Size: Standard, Size: Large, Color: White
Fits well. Large is true to size. Soft and breathable. My husband was a Brooks Brothers only shirt wearer. He likes the pinpoint cotton. I washed it cold and dried it on delicate cycle. It is slightly wrinkled but perfect to wear casually with blue jeans.
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Reviewed in the United States on April 8, 2026
★★★★★ 3
Not too bad for the cost but could be better.
Special Size: Standard, Size: 3X-Large, Color: Navy Blue
I like the shirt. It fits well and color is as described.
Main reason for 3 stars is that they do a lousy job with sewing on the buttons.
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Reviewed in the United States on May 9, 2026