Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
FMF Racing KTM SX-F 07-15/XC-F 07-15/XCF-W 08-16/SMR 07-10/HSKY FE250/350 14-16 Hex Q4 S/A MufflerThe FMF Racing 4 Stroke Q4 Muffler is specifically engineered for KTM models including SX F (07 15), XC F (07 15), XCF W (08 16), SMR (07 10), and HSKY FE250 350 (14 16). This hexagonal muffler delivers a perfect balance of performance and sound, enhancing your bike's power output and exhaust tone without sacrificing reliability. Crafted with precision, the Q4 Muffler is designed to optimize exhaust flow, improve throttle response, and reduce weight
The FMF Racing 4-Stroke Q4 Muffler is specifically engineered for KTM models including SX-F (07-15), XC-F (07-15), XCF-W (08-16), SMR (07-10), and HSKY FE250/350 (14-16). This hexagonal muffler delivers a perfect balance of performance and sound, enhancing your bike's power output and exhaust tone without sacrificing reliability.Crafted with precision, the Q4 Muffler is designed to optimize exhaust flow, improve throttle response, and reduce weight compared to stock components. Whether you are racing or riding off-road, this muffler offers a significant upgrade that meets the demands of serious riders.
Made by FMF Racing, a trusted name in high-performance exhaust systems, the Q4 Muffler combines durability with a sleek, aggressive design that complements your KTM's look. Easy to install with direct bolt-on fitment, it allows for quick upgrades and maintenance.
Experience a deeper, more aggressive exhaust note with reduced restrictive backpressure, making it an excellent choice for riders who want enhanced engine performance and a distinctive sound on the trails or the track.
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
4.8 ★★★★★
Based on 439 reviews
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Product Reviews
★★★★★ 4
Comfy but not no-show
Color: Black & Grey, Size: Medium
They feel good and are comfortable and warm, but they are not “no-show” as described.
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Reviewed in the United States on December 25, 2025
★★★★★ 3
Socks
Color: Blue & Green, Size: Medium
They are about what I expected for the price. Nice and warm, but they pill a lot and sit higher on my ankle than I'd like. Very cozy and comfy though. Great around the house, not really great for hiking though. Kinda thin after a few uses outdoors. Washable but not very durable.
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Reviewed in the United States on November 21, 2025
★★★★★ 5
Great Sox
Color: Grey & Blue, Size: Large
Very comfortable, nice colors.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great socks!!
Color: Black & Grey, Size: Medium
Love these socks. I am on my feet all day and other socks sweat, my feet are uncomfortable. These keep the moisture way from my feet and they are soft too. These were a great find and I highly recommend them.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
These are my favorite socks
Color: Blue & Green, Size: Medium
Theses socks are so comfortable perfect size and thickness theses were the only socks I took on a 2 week Ireland trip with me.
These are a great value for your money and they look so cute on, I could not find any socks in Ireland that were as soft and have the durability that these have.
I highly recommend! I am a sock lover also and picket about texture.
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Reviewed in the United States on October 19, 2025