FMF FULL SYSTEM STAINLESS / ALUM  W CARBON CAP
FMF FULL SYSTEM STAINLESS / ALUM  W CARBON CAP
FMF FULL SYSTEM STAINLESS / ALUM  W CARBON CAP
FMF FULL SYSTEM STAINLESS / ALUM  W CARBON CAP

FMF FULL SYSTEM STAINLESS / ALUM W CARBON CAP

Regular price
$849.99
Sale price
$849.99

 **FMF’s are in and out of stock based on availability from the manufacturer. Lead times range from 2 weeks to 12 weeks. Email us to confirm if the one you need is in stock at the time of order**

 

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 with Carbon Fiber End Cap

-Massive Power gains throughout the RPM range.

-Huge weight savings

-New RTS (Rapid Tuning System)

-FMF uses the highest quality proprietary blend stainless steel made especially to our standards.

 

FOR ANY FITMENT QUESTIONS CONTACT US

TYPE A (PN#045634)

  • 19-20 FC 250
  • 19-20 250 XC-F, SX-F

TYPE B (PN#045636)

  • 19-20 FC, FX 350
  • 19-20 350 XC-F, SX-F

TYPE C (PN#045650)

  • 20 FEs, FE 350 (no O2 sensor bung)
  • 20 350 EXC-F, XCF-W (no O2 sensor bung)

TYPE D (PN#045638)

  • 19-20 FC, FX 450
  • 19-20 450 XC-F, SX-F
  • 18,20 FC 450 ROCKSTAR EDITION
  • 18 450 SX-F FACTORY EDITION

TYPE E (PN#045662)

  • 20 FEs, FE 501 (no O2 sensor bung)
  • 20 500 EXC-F, XCF-W (no O2 sensor bung)

 

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