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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
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Description
FMF Racing Yamaha YZ250F 14-18/YZ250FX 15-19/WR250F 15-19 Powercore 4 Hex MufflerThe FMF 4 Stroke Powercore 4 Muffler is designed specifically for Yamaha YZ250F models from 2014 to 2018, YZ250FX from 2015 to 2019, and WR250F from 2015 to 2019. Delighting riders with a perfect balance of performance and sound, this muffler features a hexagonal shape that provides a sharp, aggressive look on your dirt bike. Crafted by FMF Racing, a trusted name in high performance exhaust components, the Powercore 4 muffler is built for durability
The FMF 4-Stroke Powercore 4 Muffler is designed specifically for Yamaha YZ250F models from 2014 to 2018, YZ250FX from 2015 to 2019, and WR250F from 2015 to 2019. Delighting riders with a perfect balance of performance and sound, this muffler features a hexagonal shape that provides a sharp, aggressive look on your dirt bike.Crafted by FMF Racing, a trusted name in high-performance exhaust components, the Powercore 4 muffler is built for durability and enhanced engine output. It is engineered to optimize your bike's exhaust flow, resulting in better power delivery and throttle response. This part is ideal for riders who want to upgrade their bike's exhaust system for racing or recreational riding.
Installation is straightforward, fitting seamlessly onto compatible Yamaha models without extensive modifications. Its lightweight construction helps improve handling and overall ride quality, allowing you to push your limits on the trail or track.
With this FMF muffler, expect a deeper, more resonant exhaust note that stands out while meeting necessary emission standards. Whether you're building a competitive race machine or upgrading your everyday ride, the Powercore 4 muffler combines sound craftsmanship with performance enhancements to elevate your riding experience.
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
4.4 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Size up, great quality
Number of Items: 3, Color: Grey/Blue/Sea, Size: X-Small
I ordered the XS and I have to say they run small. They fit my 2 year old not 6 year old. So size up. But honestly love the quality of Amazon essential shirts. I buy these for my kids pjs they are very soft
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Reviewed in the United States on December 24, 2025
★★★★★ 5
Comfy and Cool Shark Shirt
Number of Items: 1, Color: Ivory Sharks, Size: X-Small
We live near the beach, so I love finding ocean themed clothing for my little grandson. He loves this colorful swimming sharks crew neck t-shirt. He says it looks "cool." The cotton blend material is soft and and gentle against his skin. It's breathable and slightly stretchy. . The stitching is straight and consistent with no loose threads. We have fun talking about the different sharks, and the shirt looks great with his everyday jeans, joggers, or shorts. If you want some growing room, I suggest ordering a size up. The 5T is just a little long and roomy in the shoulders for my grandson who usually wears size 4. For laundering, I turn the shirt inside out and wash on cold to preserve the print. I haven't noticed any shrinkage or fading. I've been drying it on a warm setting (though cool is ideal), but I’m pretty careful not to leave it in the dryer too long to avoid wrinkles. He's been wearing it since his birthday in February, and so far, it's kept its shape, and seems to resist stains. If you have a little one that loves sharks, this check out this comfy ocean themed crew neck.
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Reviewed in the United States on May 2, 2026
★★★★★ 4
Size up
Number of Items: 3, Color: Grey/Blue/Sea, Size: X-Small
Good quality but definitely size up one size.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
True to size
Number of Items: 1, Color: White, Size: Large
This white undershirt was exactly what we ordered. The fit and quality met expectations, and it works perfectly for everyday wear. Simple, reliable, and a great value.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Essential Tees
Number of Items: 5, Color: Navy, Size: XX-Large
Nice quality for some basic, essential tees. The ratio cotton to spandex makes it very comfortable to wear. Great value.
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Reviewed in the United States on May 10, 2026