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 motorcycle with the FMF Factory 4.1 RCT Slip-On Muffler. Engineered for peak performance and durability, this muffler delivers improved exhaust flow and significant power gains across the entire RPM range.
Description
The FMF Factory 4.1 RCT (Resonance Chamber Technology) incorporates a patented core shape to reduce decibels while maximizing power output. Internal ducts increase internal volume, optimizing exhaust flow for noticeable power gains. FMF's Factory Forward Engineering centralizes mass, enhancing durability and minimizing crash damage. The innovative rear end cap allows for easy installation of tuning tip inserts or a spark arrestor with just four screws. This slip-on muffler is compatible with both the stock header and FMF headers. The muffler is available in a blue anodized finish with a carbon fiber end cap. The included QuietCore insert ensures compliance with AMA and FIM sound requirements. The FMF Factory 4.1 RCT Slip-On Muffler is the ideal upgrade for riders seeking enhanced performance and a competitive edge. Weighing only 7.1 lbs, it will make a noticeable difference.
Features & highlights
- RCT (Resonance Chamber Technology) reduces decibels and maximizes power.
- Internal ducts improve exhaust flow for significant power gains.
- Factory Forward Engineering centralizes mass and reduces crash damage.
- Innovative rear end cap allows easy installation of tuning tips or spark arrestor.
- Compatible with stock or FMF headers.
- Includes QuietCore 94 dB insert and spark arrestor.
- Meets AMA and FIM sound requirements.
Technical specifications
- Brand: FMF
- Product Name: Muffler
- Type: Slip-On Silencer
- Muffler Material: Aluminum
- Pipe Material: Stainless Steel
- End Cap Material: Carbon Fiber
- End Cap Style: Conical
- Muffler Color/Finish: Anodized Gray
- End Cap Color/Finish: Black
- Features: with Spark Arrestor
- Weight: 3.23 kg (7.1 lb)
Important to know
NOTE: Will not pass 2025 FIM sound regulation.
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
045694
Muffler
3,23 kg (7,1 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.

