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FACTORY 4.1 RCT TITANIUM ANODIZED SL (Slip-On) W/ CARBON CAP ()

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The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our 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 our exacting specifications and is manufactured 100% at our Southern California factory.

-Available in Blue Anodized Titanium Muffler with Carbon End Cap 

-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 specifically to our standards.

-See Features Tab -> Fitment for header compatibility 

Notice: Closed Course Use Only
Item ID: 045668
Type: Slip-On
Configuration: Single
Const: Titanium
Finish: Blue Anodized
Midpipe: Stainless Steel
Endcap: Carbon
Spark Arrestor: Screen Insert (included)
Carb Warning: no
Quiet Insert: 94dB Insert (included)
Weight: 7.1 lbs.

Item Id - Manual Description
041546 - INST SHEET HON TRX450R'06-07 FACTORY 4.1 MUFFLER (04124-67)
041587 - INST SHEET HON CRF450X'19 HEX Q4 MFLR (041578)
041603 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
041611 - INST SHEET HON CRF250R'22 FACT-4.1 RCT MFLRS (041610-13)
041611 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
042259 - INST SHEET KAW KX250F'09 4.1 MFLRS
042267 - INST SHEET KAW KX450F'09 4.1 MFLRS
042286 - INST SHEET KAW KX450F'09 4.1 MFLRS
042371 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
042371 - INST SHEET KAW KX450F'19 F4.1 RCT MFLRS
042376 - INST SHEET KAW KX250F'17 F4.1 RCT MFLRS
042376 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
042396 - INST SHEET KAW KX250F'17 F4.1 RCT MFLRS
042396 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
042404 - INST SHEET KAW KX450F'24 F4.1 RCT MFLRS
043365 - INST SHEET RMZ450'11 F4.1 HEX/RCT MFLR (043299-3306)
043373 - INST SHEET SUZ RMZ250'19 FACT-4.1 (043372-75)
044365 - INST SHEET YAM YZ450F'07 FACTORY 4.1 (044234-39)
044409 - INST SHEET YAM YZ450F'14 FACT-4.1 RCT MFLRS (04405-12)
044429 - INST SHEET YAM YZ250F'14 FACT-4.1 RCT MFLRS (044427-31)
044429 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
044445 - INST SHEET YAM YZ450F'18 PC-4/Q4/FACT-4.1 RCT MFLRS (04441-47)
044445 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
044455 - INST SHEET YAM YZ250F'19 PC-4/Q4/FACT-4.1 RCT MFLRS (044451-57)
044455 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
044466 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
044466 - INST SHEET YAM YZ450F'18 PC-4/Q4/FACT-4.1 RCT MFLRS (04441-47)
044474 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045586 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045586 - INST SHEET KTM250/450SXF'15 FE F4.1 HEX S/O MFLR
045629 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045629 - INST SHEET KTM250-450SXF'18-19 FE F4.1 RCT SLIP-ON MFLR
045633 - INST SHEET KTM250-450SXF'18-19 FE F4.1 RCT SLIP-ON MFLR
045633 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045648 - INST SHEET KTM250XCF'20 F4.1 RCT SLIP-ON MFLR
045648 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045658 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045668 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045669 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045670 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
045670 - INST SHEET KTM FE250SXF'23 F4.1 RCT SLIP-ON MFLR
045690 - INST SHEET FACT-4.1 RCT SPIRAL RING REMOVAL
Make Model Year Make Model Year
BETA 350RR 20-25 BETA 390RR 20-25
BETA 390RR 20-25
BETA 430RR 20-25 BETA 480RR 20-25
BETA 480RR 20-25
    BETA 350/390/430/480RR'20-25 HEX Q4 S/A MFLR   Item ID: 045667 - Q4 HEX S/A
    For: BETA 350RR 2020

     

    BETA 350/390/430/480RR'20-25 P-CORE 4 HEX MFLR   Item ID: 045666 - Powercore 4 HEX
    For: BETA 350RR 2020

     

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