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  • Overall increase in power and torque.
  • Durable stainless steel and aluminum construction.
  • Space Age internal packing material for maximum longevity.
  • Internal shape of core uses Hi-Flo technology.
  • Enhanced sonic evacuation provides for higher flow and increased power.
  • Includes removable spark arrestor.
  • Can be used with FMF or Stock OEM Header

When designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability all at a price that won't break the bank.


Make Model Year
Husqvarna TE 150 2019
Husqvarna TE 250i 2019
Husqvarna TE 300i 2019
Husqvarna FE 350S 2019
Husqvarna FE 501S 2019
Husqvarna FE 250S 2019
Husqvarna FE 450S 2019
Honda CRF450X 2019
Husqvarna FE 250 2019
Husqvarna FE 350 2019
Husqvarna FE 450 2019
Husqvarna FE 501 2019
Husqvarna TX 300 2019
Husqvarna FX 350 2019
Husqvarna FX 450 2019
Husqvarna TC 125 2019
Husqvarna TC 250 2019
Husqvarna FC 250 2019
Husqvarna FC 350 2019
Husqvarna FC 450 2019
Husqvarna FS450 2019
Husqvarna FC 450 Rockstar Edition 2019
Husqvarna Enduro 701 2019

About FMF

One man, in the name of power.

In 1973 Don Emler created FMF out of a desire to go faster. For nearly fifty years FMF has been leading in the pursuit of precision, power and speed.

1973 was about revolutionary firsts. Zeppelin, Floyd and the Stones were setting the world ablaze. We tasted our first Lite beer, rode our first Jet Ski, and Don Emler lit the torch sparking one of the most influential brands in motorcycle history. In his mind he is ALWAYS RACING.

Like most pioneering inventors, Big D built his performance exhausts with a sense of purpose. From day one…always striving for perfection. FMF is ALWAYS INNOVATING.

45 years later the song remains the same. FMF still engineers and builds everything by hand, from the ground up in the USA. As long as you dream of flying higher and going faster, we will continue to innovate and build things the right way…THE AMERICAN WAY.

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All Items Ship From The USA

Shipping and Delivery

We ship from a vast distribution network strategically placed in different regions within the USA to provide fast shipping times to most locations. Sometimes your order will arrive in separate boxes if you order multiple items due to many inventory locations. Some items may ship directly from the manufacturer to you.

Most items are kept in stock, however some products are custom made to order and require manufacturing time and will likely ship directly from the manufacturer.

Expected ship dates are our best estimate based on past shipping times and are more than 90% accurate. Most products ship within 2 business days, unless otherwise noted on the product page. Should an unexpected delay occur, we will notify you by e-mail (or letter) of the new projected shipping date.

In-stock items usually ship the next business day (weekends and holidays are not considered business days).

Please allow an additional 1 to 5 business days after the shipment date for delivery.

Free Shipping

Get Free Shipping on qualified items without hidden fees. 

All Terrain Depot has Free Shipping everyday for most product purchases over $99, saving you some valuable cash on your ATV/UTV Accessory products. Some restrictions do apply.

Here's the details:

  • Free shipping offer is valid only on qualified items. Eligible items are identified on their product information page. They can also be identified in your shopping cart. 
  • Shipping method will be selected by All Terrain Depot. Free shipping orders will be delivered via a standard ground shipping method selected by our direct-ship manufacturers/fulfillment centers.  
  • Not available on international, Alaska, Hawaii, Puerto Rico or APO/FPO orders. Only standard ground shipping orders to residential and commercial addresses in the continental US are eligible for Free Shipping.

Lost or damaged shipments

Items will not be replaced or refunded until carriers perform their investigation. This period ranges from a few days to a few weeks.

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