About this item

• 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.