Fmf Factory 4.1 Rct Slip-on Muffler
Fmf Factory 4.1 Rct Slip-on Muffler
Hurry up, only 2 items left in stock.
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Estimated delivery: Feb 04 - Feb 08
About this product
About this product
Unleash the full potential of your motorcycle with the FMF Factory 4.1 RCT Slip-On Muffler. Engineered for performance and durability, this muffler delivers significant power gains and weight savings, enhancing your riding experience.
Description
The FMF Factory 4.1 RCT Slip-On Muffler utilizes FMF's Resonance Chamber Technology™ internally and externally, optimizing exhaust flow for maximum power across the RPM range. Its shorter overall length reduces vulnerability to crash damage, while Factory Forward Engineering centralizes mass by positioning the muffler closer to the motor. Crafted from aerospace-grade materials and manufactured entirely in Southern California, this muffler meets exacting specifications for quality and performance. The Rapid Tuning System (RTS) allows for easy maintenance and tuning. Upgrade your bike with the Factory 4.1 RCT and experience the difference in power, handling, and overall performance.
Features & highlights
- Experience massive power gains throughout the entire RPM range, providing enhanced acceleration and throttle response.
- Enjoy significant weight savings, improving handling and maneuverability.
- Benefit from the Resonance Chamber Technology (RCT), optimizing exhaust flow for peak performance.
- Reduce the risk of damage with a shorter muffler length and centralized mass design.
- Crafted with aerospace-grade materials for exceptional durability and longevity.
- Simplify maintenance with the Rapid Tuning System (RTS).
Technical specifications
- Brand: FMF
- Type: Slip-On
- Muffler Material: Aluminum
- Pipe Material: Stainless Steel
- End Cap Material: Carbon Fiber
- Muffler Color/Finish: Raw
- Material: Aluminum, Carbon Fiber, Stainless Steel
Important to know
This is a slip-on muffler; ensure compatibility with your motorcycle's existing exhaust system. Verify fitment before installation.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
FMF
042291
Muffler
Aluminum
Carbon Fiber
Aluminum, Carbon Fiber, Stainless Steel
Slip-On
Each
Stainless Steel


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

