Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Exhaust› Mufflers and Resonators
FMF
Powercore 4 HEX Slip-On Muffler
SKU: 044404
Easy — 1–2 hours
Overview
Constructed with durable stainless steel and aluminum, this muffler is built for rugged durability. It features Space Age internal packing material for maximum longevity. The slip-on configuration is designed for single applications and includes a removable screen insert spark arrestor. A quiet insert is sold separately.
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Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Available on iOS & Android
Specifications
| Brand | FMF |
| Part Number | 044404 |
| Category | Exhaust |
Videos
HOW TO INSTALL A FMF SLIP ON EXHAUST MUFFLER
installing the FMF Powercore 4 slip-on exhaust on a CRF125F 2021
How To: FMF Spark Arrestor Installation | MXstore.com.au
Stock vs FMF Q4 Exhaust on KLX 300 | Complete Install and Testing
FMF Racing Powercore 4 Slip On Exhaust Review
FMF PowerCore 4 Install For DRZ400
Yamaha 700 Raptor FMF Q4 Hex start up
FMF Power Core 4 Hex - 2017 WR450F Install + Before and After
FMF Powercore 4 Exhaust Review - AMX Product Insights with Riana Crehan
Sound comparison of the 2024 yz250f stock exhaust and the FMF POWER CORE!
Installing A New FMF GYTR Pipe On My Yamaha WR450F: Step-by-Step Guide | Before and After
FMF 4-Stroke Spark Arrestor Insert Tech Tip
NEW 2023 YZ450F FMF Exhaust BARKS!! TOO LOUD
2015 WR450F FMF Powercore 4 HEX
Dirt Bike Tech Tips/How-To: Install a Muffler | FMF Factory 4.1 RCT
Yamaha WR450F FMF Full Exhaust System
FMF 4-Stroke Muffler Re-Pack Instructional Video
FMF Pipe Install - January 2018
FMF 4.1 Spark Arrestor Install - Is it any quieter? 2020 Yamaha WR450F
About MOTORMIA
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
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