Fmf Factory 4.1 Rct Slip-on Muffler
Fmf Factory 4.1 Rct Slip-on Muffler
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Estimated delivery: Feb 04 - Feb 08
About this product
About this product
Unleash the full potential of your machine with the FMF Factory 4.1 RCT Slip-On Muffler. This high-performance exhaust upgrade delivers significant power gains and weight reduction, enhancing your riding experience whether you're on the track or tearing up the trails.
Description
The FMF Factory 4.1 RCT Slip-On Muffler utilizes FMF's advanced Resonance Chamber Technology™ (RCT) both internally and externally. This innovative design, combined with Factory Forward Engineering, moves the muffler closer to the engine, centralizing mass and improving handling. The shorter overall length minimizes the risk of crash damage. Constructed from aerospace-grade materials and manufactured entirely in FMF's Southern California facility, the Factory 4.1 RCT ensures exceptional durability and performance. Experience massive power gains throughout the RPM range, providing improved throttle response and acceleration. The Rapid Tuning System (RTS) allows for easy maintenance and customization.
Features & highlights
- Experience massive power gains throughout the entire RPM range for enhanced performance.
- Reduce weight significantly, improving handling and agility.
- Benefit from Resonance Chamber Technology™ (RCT) for optimized exhaust flow and sound.
- Enjoy increased durability and reduced risk of damage thanks to the shorter design and robust construction.
- Take advantage of the Rapid Tuning System (RTS) for quick and easy maintenance.
- Made with aerospace-grade materials, ensuring premium quality and longevity.
- Proudly manufactured in the USA.
Technical specifications
- Brand: FMF
- Product Name: Muffler
- Type: Slip-On
- Material: Aluminum, Stainless Steel
- Muffler Material: Aluminum
- Pipe Material: Stainless Steel
- End Cap Material: Carbon Fiber
- Muffler Color/Finish: Raw
Important to know
This is a slip-on muffler, designed to work with your existing head pipe. Check fitment to ensure compatibility with your motorcycle model.
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
042330
Muffler
Aluminum
Carbon Fiber
Aluminum, 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.

