Fmf Factory 4.1 Rct Slip-on Muffler
Fmf Factory 4.1 Rct Slip-on Muffler
Hurry up, only 3 items left in stock.
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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 improved power, reduced weight, and a race-inspired sound. Constructed with premium materials and advanced technology, the Factory 4.1 RCT is designed for enthusiasts and professionals seeking the ultimate exhaust upgrade.
Description
The FMF Factory 4.1 RCT slip-on muffler utilizes FMF's Resonance Chamber Technology™ both internally and externally, optimizing exhaust flow and enhancing power delivery. Its shorter overall length minimizes vulnerability to crash damage and complements FMF's Factory Forward Engineering, which centralizes mass by positioning the muffler closer to the engine. Constructed entirely from aerospace-grade materials to meet exacting specifications, this muffler is manufactured in FMF's Southern California facility. The result is a durable, high-performance exhaust system that delivers both power and style. The anodized gray aluminum muffler body and carbon fiber end cap create a stunning look, while the included spark arrestor and quiet insert allow for versatile use.
Features & highlights
- Enhanced power and torque across the RPM range.
- Resonance Chamber Technology™ (RCT) for optimized exhaust flow.
- Shorter design reduces the risk of crash damage.
- Aerospace-grade materials ensure durability and performance.
- Manufactured in the USA for exceptional quality control.
- Includes spark arrestor and 94db quiet insert for versatile riding.
- Lightweight design improves handling.
Technical specifications
- Brand: FMF
- Product Name: Muffler
- Type: Slip-On
- Muffler Material: Aluminum
- Muffler Color/Finish: Anodized Gray
- End Cap Material: Carbon Fiber
- End Cap Color/Finish: Black
- End Cap Style: Conical
- Pipe Material: Stainless Steel
Important to know
Spark arrestor and quiet insert (94db) included.
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
041618
Muffler
Aluminum
Carbon Fiber
Slip-On
Each
Stainless Steel
Conical


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.

