Name: FMF Racing® 045558 - Factory 4.1 RCT™ Stainless Steel Slip-On Muffler
Brand: FMF Racing
SKU: mpn4565169004
Price: 494.99 USD
Availability: OutOfStock
Rating: 5 (4 reviews)

Vehicle Fitment

Husqvarna

KTM

Specifications

Material	Stainless Steel
End Cap Material	Carbon Fiber
End Cap Finish	Carbon Fiber
Exhaust Type	Slip-On Muffler

Features

All new incorporating the latest in Resonance Chamber Technology
Patented core shape lowers sound level while maintaining maximum power output
Patented canister shape increases internal volume for more sound absorbing material
Patented chamber design to enhance and refine exhaust pressure
Factory Forward Engineering centralizes mass and is less prone to crash damage
Tuned exhaust with optimized core specifications for each application
Innovative rear endcap for simple installation of tuning tip inserts or spark arrestor
Stainless Steel midpipe for strength and durability
Includes spark arrestor and wash plug
Designed for your exhaust system needs
Will deliver unparalleled performance
Exquisite workmanship and great longevity

Product Details

Factory 4.1 RCT™ Stainless Steel Slip-On Muffler (045558) by FMF Racing®. The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to the Factory Forward Engineering - moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet the exacting specifications and is manufactured 100% at the Southern California factory. Massive power gains throughout the RPM range. Huge weight savings. New RTS (Rapid Tuning System). FMF uses the highest quality proprietary blend of alloy grade titanium made especially to the standards.

Installation

FMF Racing® - Factory 4.1 RCT™ Stainless Steel Slip-On Muffler Installation guide

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FMF Racing® - Factory 4.1 RCT™ Stainless Steel Slip-On Muffler Installation guide Made In USA FMF Racing Authorized Dealer FAQ Catalog About us

Brand:

FMF Racing

Part Number:

045558

Warranty

All merchandise manufactured by FMF Racing has a warranty against manufacturing defects for a period of one (1) year from the date of invoice. Warranty is limited to the repair or replacement of defective products. There is no warranty for normal wear and tear, any type of crash damage or for product failure due to improper muffler or packing maintenance.

FMF Racing reserves the right to repair, replace or issue an FMF credit for defective product at its discretion. Credits are valid for a period of one (1) year from issuance. No credit will be issued for labor or other costs incurred beyond the value of the original product. Product returned as a warranty after having been used, if found to be defective, is not valued at the full purchase price. A depreciated value will be estimated for used product.

Warranty excludes product that has been modified or where the product was improperly installed, abnormally used or misused. This limited warranty is in lieu of all other guarantees or warranties implied or expressed. This includes, without limitation, any warranties or merchantability and fitment for a particular purpose.

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.

1-4 of 4 Reviews

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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.

FMF Racing® 043365 - Factory 4.1 RCT™ Slip-On Muffler

Posted by Wali (Warr Acres, OK) / April 06, 20192018 Suzuki RMZ450

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

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!