Fmf Factory 4.1 Rct Exhaust System Race
Fmf Factory 4.1 Rct Exhaust System Race
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Estimated delivery: Feb 04 - Feb 08
About this product
About this product
The FMF Factory 4.1 RCT Exhaust System is engineered for closed course competition, delivering unparalleled performance and durability. Built with aerospace-grade materials and FMF's Resonance Chamber Technology, this system is designed to optimize power and withstand the rigors of racing.
Description
Experience the cutting-edge of exhaust technology with the FMF Factory 4.1 RCT. This exhaust system integrates FMF Resonance Chamber Technology™ (RCT) both internally and externally, enhancing power delivery and reducing noise. Its shorter overall length minimizes vulnerability to crash damage and complements Factory Forward Engineering, which centralizes mass by positioning the muffler closer to the engine. Manufactured entirely in Southern California using aerospace-grade materials to meet stringent specifications, this system guarantees top-tier quality and performance. The titanium construction ensures a lightweight design without compromising strength. With its blue anodized muffler and carbon fiber end cap, the Factory 4.1 RCT not only performs exceptionally but also enhances the aesthetics of your motorcycle. Designed for racers and enthusiasts seeking a competitive edge, this exhaust system is the ultimate upgrade for closed course environments.
Features & highlights
- Maximizes power and reduces noise with FMF Resonance Chamber Technology™ (RCT).
- Shorter design minimizes crash damage and centralizes mass.
- Constructed from aerospace-grade materials for exceptional durability.
- Manufactured in the USA to exacting standards.
- Includes a spark arrestor screen insert for added safety.
- Comes with a 94dB insert for sound level adjustment.
Technical specifications
- Brand: FMF
- Product Name: Exhaust System
- Type: Race
- Pipe Material: Titanium
- Muffler Color/Finish: Anodized, Blue
- End Cap Material: Carbon Fiber
- End Cap Color/Finish: Black
Important to know
This exhaust system is designed for closed course competition only and will not pass the 2025 FIM sound regulation. Spark arrestor screen insert and 94dB insert are 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
044478
Exhaust System
Carbon Fiber
Race
Each
Titanium


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.

