FMF Racing 18-26 Yamaha YZ450F SS Aluminum 4.1 RCT S/O w/Carbon Cap

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FMF Racing Yamaha WR450F / YZ450FX 2019-2026; Yamaha YZ450F 2018-2026 Factory 4.1 RCT Stainless SL (Slip-On) w/ Carbon End Cap 044443

Name: FMF Racing Yamaha WR450F / YZ450FX 2019-2026; Yamaha YZ450F 2018-2026 Factory 4.1 RCT Stainless SL (Slip-On) w/ Carbon End Cap 044443
Brand: FMF
SKU: 044443
Price: 649.99 USD
Availability: InStock

$649.99

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Fitment Matched bike fitment Exact bike matches load from verified fitment data View fitment details

Manufacturer part number 044443 FMF

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Factory 4.1 RCT Slip-On Muffler - Stainless Steel/Aluminum with Carbon Fiber End Cap - YZF/FX

Product Details

Brand	FMF
Part Number	1821-1838
Manufacturer Part Number	044443
Suggested Retail	$649.99
Units	EACH

Features

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
Compatible with stock header or FMF header
Meets AMA and FIM sound requirements
QuietCore 94 dB insert included
Spark arrestor included in muffler
Made in the USA

Videos

FMF 2020 YZ250F Factory 4.1 Sound Check

Specs

Product Name	MUFFLER
Type	SLIP-ON
Model	FACTORY 4.1 RCT
Muffler Material	ALUMINUM / STAINLESS STEEL
Muffler Color/Finish	NATURAL
End Cap Material	CARBON FIBER
End Cap Color/Finish	BLACK
Units	EACH
Riding Style	OFF-ROAD

Package Info

Weight	9.15 lb
Length	42.5 in
Width	8.5 in
Height	8 in

Part Codes

Harmonized	EU - 87141040000 US - 8714.10.0050 SCHEDULE B - 8714.10.0090

Part Notices

WARNING: |
WARNING: Cancer and Reproductive Harm - www.P65
Warnings.ca.gov

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.

General Safety Warning

Failure to follow manufacturer's recommendations and requirements can cause product failure resulting in serious injury or death. While effort has been taken in collecting accurate fitment information, supplier accepts no liability for loss or damage resulting from errors or omissions.

Product details and identifiers

Distributor part	Manufacturer part	UPC / EAN	Package
1821-1838	044443	—	9.15 lb; 42.5 × 8.5 × 8 in

Features

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
Compatible with stock header or FMF header
Meets AMA and FIM sound requirements
QuietCore 94 dB insert included
Spark arrestor included in muffler
Made in the USA

Specifications

Product Name	MUFFLER
Type	SLIP-ON
Model	FACTORY 4.1 RCT
Muffler Material	ALUMINUM / STAINLESS STEEL
Muffler Color/Finish	NATURAL
End Cap Material	CARBON FIBER
End Cap Color/Finish	BLACK
Units	EACH
Riding Style	OFF-ROAD

Vehicle fitment

2 exact approved application ranges are shown. Select the listed part number when variants differ.

Years	Make	Model	Required part	Position	Notes
2018-2026	Yamaha	YZ450F	1821-1838	—	—
2019-2025	Yamaha	YZ450FX	1821-1838	—	—

References

26 PU OFFROAD / Page 11

Notes and disclosures

Fitment is based on source-listed stock applications. Confirm the exact part number and installation requirements; vehicle modifications can change compatibility.

Description