Fmf Factory 4.1 Rct Slip-on Muffler With Spark Arrestor
Fmf Factory 4.1 Rct Slip-on Muffler With Spark Arrestor
Available in stock (15)
-
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 system delivers increased power and reduced noise levels, making it the ideal upgrade for serious riders.
Description
The FMF Factory 4.1 RCT slip-on muffler utilizes Resonance Chamber Technology (RCT) with a patented core shape, effectively lowering decibels while maximizing power output across the entire RPM range. Internal ducts within the RCT system increase internal volume, optimizing exhaust flow for significant power gains. FMF's Factory Forward Engineering centralizes mass, enhancing handling and minimizing the risk of damage from crashes. The innovative rear end cap design simplifies the installation of tuning tip inserts or a spark arrestor with just four screws. Compatible with both stock and FMF headers, this muffler offers versatility and ease of installation. It features a durable anodized gray aluminum muffler body, a stainless steel mid-pipe, and a stylish carbon fiber end cap. A QuietCore 94 dB insert and spark arrestor are included, ensuring compliance with AMA and FIM sound requirements. The FMF Factory 4.1 RCT Slip-On Muffler is engineered for peak performance and lasting durability.
Features & highlights
- Resonance Chamber Technology (RCT) lowers decibels and maximizes power.
- Internal ducts optimize exhaust flow for power gains throughout the entire range.
- Factory Forward Engineering centralizes mass for improved handling and reduced crash damage.
- Innovative rear end cap simplifies tuning tip and spark arrestor installation.
- Compatible with stock and FMF headers for versatile use.
- Includes QuietCore 94 dB insert and spark arrestor for sound compliance.
- Durable construction with an anodized gray aluminum muffler body, stainless steel mid-pipe, and carbon fiber end cap.
Technical specifications
- Brand: FMF
- Product Name: Muffler
- Type: Slip-On Silencer
- Muffler Material: Aluminum
- Muffler Color/Finish: Anodized Gray
- Pipe Material: Stainless Steel
- End Cap Material: Carbon Fiber
- End Cap Color/Finish: Black
- End Cap Style: Conical
- Features: with Spark Arrestor
- Weight: 2.18 kg (4.8 lb)
Important to know
Please note: This muffler will not pass 2025 FIM sound regulations.
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
045472
Muffler
2,18 kg (4,8 lb)
Aluminum
Carbon Fiber
with Spark Arrestor
Slip-On Silencer
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.

