FMF Factory 4.1 RCT Slip-On Dual Exhaust - Aluminum With Stainless Steel Mid Pipe And Carbon Fiber End Caps

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. It starts at the center with a new core - a patent pending shape enhances and refines the exhaust pressure wave for optimal power output while lowering the sound level. In addition, it achieves a shorter overall length that is less susceptible to crash damage and complementary to the Factory Forward Engineering - moving the muffler(s) closer to the motor to centralize mass. Visible changes to the exterior include a redesigned canister to increase internal capacity for the maximum volume of packing material. The packing itself was not overlooked - a proprietary blend formulated for superior durability and sound attenuation. The final component is a new rear endcap engineered for simple tuning adjustments incorporating a snap ring feature to secure the standard and optional inserts. The Factory 4.1 RCT is constructed from only aerospace-grade materials that meet FMF's exacting specifications and 100% manufactured at their Southern California factory.

• Massive Power gains throughout the RPM range.
• Quieter than stock.
• Huge weight savings.
• Includes stainless steel midpipe.
• Can be used with FMF header or stock.
• New RTS (Rapid Tuning System) makes for easy sound insert changes as well as adding U.S. Forestry Approved Spark Arrestor.
• #1 Exhaust in 2011 Supercross Series, 2011 Motocross Series, 2011 Motocross of Nations and 2011 Monster Energy Cup!.

Detailed Specifications:

• Type: Slip-On.
• Configuration: Dual.
• Construction: Aluminum.
• Finish: Natural.
• Midpipe: Stainless steel.
• Endcap: Carbon fiber.
• Spark arrestor: Screen insert (included).
• Quiet Insert: 94dB insert (included).

Note: For closed course competition use only. Not intended for street use.