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
Upgrade your motorcycle's performance and aesthetics with the FMF Factory 4.1 RCT Slip-On Muffler. This high-performance muffler delivers significant power gains and weight savings, enhancing your riding experience on and off the track. Crafted with precision and utilizing advanced technology, the Factory 4.1 RCT is designed for enthusiasts who demand the best.
Description
The FMF Factory 4.1 RCT Slip-On Muffler incorporates FMF's Resonance Chamber Technology™ (RCT) both internally and externally, optimizing exhaust flow and maximizing power output across the entire RPM range. Its shorter overall length reduces vulnerability to crash damage, while FMF's Factory Forward Engineering centralizes mass by positioning the muffler closer to the engine, improving handling and agility. Constructed from aerospace-grade aluminum, carbon fiber, and stainless steel in FMF's Southern California factory, this slip-on muffler not only provides massive power gains but also offers substantial weight savings. The Rapid Tuning System (RTS) allows for easy maintenance and customization. Experience the difference in performance and sound with the FMF Factory 4.1 RCT.
Features & highlights
- Resonance Chamber Technology™ (RCT) optimizes exhaust flow for maximum power.
- Shorter design minimizes crash damage and centralizes mass for improved handling.
- Constructed from aerospace-grade materials for exceptional durability and performance.
- Delivers significant power gains throughout the RPM range.
- Offers substantial weight savings for enhanced agility.
- Features the Rapid Tuning System (RTS) for easy maintenance.
- Carbon fiber end cap adds a touch of style and reduces weight.
Technical specifications
- Brand: FMF
- Type: Slip-On
- Material: Aluminum, Carbon Fiber, 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 and designed to work with the OEM header. No additional parts are included beyond those necessary for direct installation of the muffler.
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
042290
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.

