• 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 Factroy 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100 percent at a Southern California factory
• 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
• Can be used with FMF or Stock OEM Header


Type: Slip-On
Configuration: Single
Const: Titanium
Finish: Blue Anodized
Midpipe: Titanium
Endcap: Titanium
Spark Arrestor: Screen Insert (included)
Quiet Insert: 94dB Insert (included)

(1) Muffler

(1) Spark arrestor

(1) Retaining ring

(1) Exhaust plug

(1) Aluminum flange spacer

Instructions