FMF Racing® 042367 - Powercore 4™ Hex Slip-On Muffler

4 reviews|Item # mpn4618387289
Universal Fit
Fitment notes:
  • Not Vehicle Specific
Notes:
  • Remember to check your local or state laws regarding vehicle noise restrictions
  • This is a Race Only product that is to be used solely for competition. It cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. Shipping Restriction: CA, NY, ME
Authorized Dealer
$359.99
In Stock (1)
See similar products
Have a Question? Ask a Specialist
888-903-4344Live Chat

Vehicle Fitment

This part is universal

Specifications

Exhaust Type
Slip-On Muffler

Features

  • 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
  • Designed for your exhaust system needs
  • Will deliver unparalleled performance
  • Exquisite workmanship and great longevity

Product Details

Universal Powercore 4™ Hex Slip-On Muffler by FMF Racing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.

Installation

FMF Racing® - Powercore 4™ Hex Slip-On Muffler Installation guide
FMF Racing® - Powercore 4™ Hex Slip-On Muffler Installation guideMade In USAFMF Racing Authorized DealerFAQCatalogAbout us
Brand:
FMF Racing
Part Number:
042367

Reviews

(4)
Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.
/5
1-4 of 4 Reviews
5 of 5
Sounds Perfect! Five Stars
I’m very pleased with the results. Installed this muffler without any problems. It fits exactly as described and provides a slight increase in top-end speed. And yes, it sounds really nice. Loud but not annoying. Just what I wanted!
FMF Racing® - Powercore 4™ Slip-On Muffler
Posted by James (Fort Worth, TX) / June 04, 20202018 Yamaha YFZ450R
5 of 5
Nice Product, Works As Described
What a nice exhaust! Very easy to install. Everybody can do it in less than 15 minutes. Looks stunning and gives a slight increase in performance. The sound is miraculous. It makes heads turn when I pass by.
FMF Racing® - Factory 4.1 SL™ 4-Stroke Silencer
Posted by Barbara (Minotola, NJ) / March 03, 20202005 Yamaha YFZ450
5 of 5
High-Performance Exhaust
This exhaust is shorter and lighter than my original muffler, and sits closer to the engine. My YFZ450R breathes easier with this exhaust, resulting in a significant power boost, especially at higher RPMs. And yeah, the carbon-fiber exhaust cap looks really cool.
FMF Racing® - Factory 4.1 RCT™ Slip-On Muffler
Posted by Kathleen (Washington Dc., DC) / May 06, 20192011 Yamaha YFZ450R
5 of 5
Moderate Sound and Performance
Easy-to-install product with a bit more powerful sound at low RPMs. Expected it to sound more aggressive at higher RPMs. Pleased with its finish and look.
Posted by Wali (Warr Acres, OK) / April 06, 20192018 Suzuki RMZ450

Questions and Answers

(0)
If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!