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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
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Description
FMF Factory 4.1 RCT Exhaust System - Aluminum - Stainless Steel Header - Carbon Fiber End Cap YZ450F /FX 2023-2024 044477Incorporates FMF Resonance Chamber Technology both internally and externally Shorter overall length that is less susceptible to crash damage and complementary to Factory Forward Engineering, moving the muffler closer to the motor to centralize mass Constructed from only aerospace grade materials that meet exacting specifications and is manufactured 100% at the southern California factory Spark arrestor screen insert included 94dB insert included For
- Incorporates FMF Resonance Chamber Technology™ both internally and externally
- Shorter overall length that is less susceptible to crash damage and complementary to Factory Forward Engineering, moving the muffler closer to the motor to centralize mass
- Constructed from only aerospace grade materials that meet exacting specifications and is manufactured 100% at the southern California factory
- Spark arrestor screen insert included
- 94dB insert included
- For closed course competition only
| 2024 | Yamaha | YZ 450 FX | - | - |
| 2023-2024 | Yamaha | YZ 450 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
4.7 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 4
Great workout tank
Size: Small, Color: Cocoa
Great workout tank with built-in padding. Fits true to size, is comfortable and soft that hugs your form. Only reason I’m giving 4 stars is because the pads do get shifted around during washes, which is typical but frustrating. I air dry and haven’t had any issues with shrinking either.
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Reviewed in the United States on March 4, 2026
★★★★★ 3
Cute but NOT supportive
Size: X-Large, Color: Floral Pink Rose, Size: X-Large, Color: Floral Pink Rose
These are NOT “workout” tanks offering support. They have a removable cup sewn into the front of the shirt, similar to a bathing suit. If you have small (or gloriously high) boobs and want a shirt to hide your nipples, this is great. If you want something to actually give support, this is NOT it. There is no band to provide support. So if you have large or low breasts, don’t even try. You’ll have to wear a bra with it unless you want your boobs hanging below the sewn in cups. That being said, the material is great. It’s nice and thick with lots of stretch. The cut is also adorable. And I LOVE all the colors. I wish it just had a supportive band!
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfy & cute! But low support
Size: X-Large, Color: Ocean Depths
This tank is super comfortable and I LOVE the color. The built-in bra is a little weird; I thought it was sewn in backwards but apparently not. It has low/medium support, bigger chested folks may not like this. Im a 36D and its right on the line for support where I can't decide about wearing this in public. I sized up and am glad I did; it fits well! Im 5'7" and 165lbs for reference.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Fantastic tank top
Size: Small, Color: Ocean Depths
This is a great tank top. I love that there is a inserted bra. I have read other reviews about the padding moving around during wash but that's really no big deal and easily put back into place. It's a super soft and well fitting shirt.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Great for small cup sizes!!
Size: X-Small, Color: Violet, Size: X-Small, Color: Violet
Comfy material & thickness and fits perfectly. The purple is flattering. I will be ordering more in different colors!! Based of the reviews I read, I think this is a great choice for the gals that are A-B cup!!
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Reviewed in the United States on May 29, 2026