This combo kit includes:

FMF Part # 041587 - Factory 4.1 Exhaust Pipe 

& 

FMF Part # #041577 - Megabomb Header Pipe. 

These part numbers are intended for a CRF450X 2019+, BUT will work with the removal of one small exhaust tab on the silencer as pictured. If you are not okay with this slight modification then please do not purchase. Please see finished pictures for a confident purchase!

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.

Item ID:041587
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 (sold separately)
Weight:6.3 lbs.

& Head Pipe FMF Part # 041577

Item ID:041577
Type:Header
Carb Warning:no
Header Const:Stainless Steel
Header Type:MegaBomb
Weight:1.8 lbs.