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FMF MUFFLER FAC4.1RCTSS/ALMCF

$ 599.99

In stock

MUFFLER FAC4.1RCTSS/ALMCF

Part #: 18211857

FMF quality guaranteed.

Available for ship to store or drop ship.


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FMF MUFFLER FAC4.1RCTSS/ALMCF

Product Specifications

Part Number

18211857

MPN

18211857

Brand

FMF

Upgrade your ride with the FMF MUFFLER FAC4.1RCTSS/ALMCF from Knobtown Cycle, Kansas City’s premier motorcycle parts destination.

Product Description

MUFFLER FAC4.1RCTSS/ALMCF

  • The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally
  • In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their 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 their exacting specifications and is manufactured 100% at their Southern California factory
  • Massive Power gains throughout the RPM range.
  • Huge weight savings
  • RTS (Rapid Tuning System)

Part Locations

Location Available
Wisconsin (WI) 4
New York (NY) 0
Texas (TX) 0
Nevada (NV) 0
North Carolina (NC) 0
National Total 4

Stock levels last updated: January 2, 2026 9:31 AM

Professional Installation Available

Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.


Thank you for Shopping at Knobtown Cycle!

When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.

Kit Fox – Owner Knobtown Cycle

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Need help with installation?  Our Service Department based in Kansas City, Missouri is here for you.  Fill out a Service Request and lets get you rolling!