FMF FACTORY 4.1 RCT STAINLESS SLIP ON W/ CARBON END CAP

**Some FMF fitments are out of stock because of availability from the manufacturer and therefore are a pre-order. Lead times range from 4 weeks to 12 weeks**

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 Natural Aluminum 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 especially to our standards. 

FEATURES

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Sound levels at idle speed tested at 1' above and 1' behind each
muffler on the same 21' 500 EXCF tested back to back.

Stock muffler 82
Stock w Pro Moto end cap / ultra silent insert 85
Stock w Pro Moto end cap / silent insert 86
Stock w Pro Moto end cap 88

Graves Motorsports w db killer 85
Graves Motorsports 89

Fmf q4 84
Fmf 4.1 88
Fmf power core 88

Lexx w db killer 86
Lexx w spark arrestor insert 87
Lexx 89
Akropovic 85
 
FOR ANY FITMENT QUESTIONS CONTACT US 

FITMENT:

045632
Make / Model / Year
GAS GAS / EX250F / 21-23
GAS GAS / MC250F / 21-23
HUSQVARNA / FC250 / 19-22
KTM / 250 SX-F / 19-22
KTM / 250 XC-F / 19-22

045628
Make / Model / Year
GAS GAS / EX350F / 21-23
GAS GAS / EX450F / 21-23
GAS GAS / MC350F / 21-23

GAS GAS / MC450F / 21-23 
HUSQVARNA / FC350 / 19-22
HUSQVARNA / FC450 / 19-22
HUSQVARNA / FC450 ROCKSTAR EDITION / 18,20-21
HUSQVARNA / FX350 / 19-22
HUSQVARNA / FX450 / 19-22
KTM / 350 SX-F / 19-22
KTM / 350 XC-F / 19-22
KTM / 350 XC-F KAILUB RUSSELL / 21
KTM / 450 SX-F / 19-22
KTM / 450 SX-F FACTORY EDITION / 18,20-21
KTM / 450 XC-F / 19-22 

045647
Make / Model / Year
GAS GAS / EC250-350F 21
HUSQVARNA FE / FEs / 250 / 20-21

HUSQVARNA FE / FEs / 350 / 20-23

HUSQVARNA FE / FEs / 450-500 / 20-23
KTM 350-500 EXCF / XCF-W / 20-23 

045594
Make / Model / Year
HUSQVARNA / FC250 / 16-18
HUSQVARNA / FC350 / 16-18
HUSQVARNA / FC450 / 16-18
HUSQVARNA / FE250 / 17-19
HUSQVARNA / FE350 / 17-19
HUSQVARNA / FE450 / 17-19
HUSQVARNA / FE501 / 17-19
HUSQVARNA / FX350 / 17-18
HUSQVARNA / FX450 / 17-18
KTM / 250 EXC-F / 17-19
KTM / 250 SX-F / 16-18
KTM / 250 SX-F FACTORY EDITION / 15-17
KTM / 250 XC-F / 16-18
KTM / 350 EXC-F / 17-19
KTM / 350 SX-F / 16-18
KTM / 350 XC-F / 16-18
KTM / 450 EXC-F / 18-19
KTM / 450 EXC-F SIX DAYS / 17-19
KTM / 450 SX-F / 16-18
KTM / 450 SX-F FACTORY EDITION / 15-17
KTM / 450 XC-F / 16-18
KTM / 500 EXC-F / 17-19