FMF - Factory 4.1 RCT Complete System (Honda)

FMF – Factory 4.1 RCT Complete System (Honda)

The FMF Factory 4.1 RCT Complete System is the pinnacle of FMF’s four-stroke technology — handcrafted for riders who want full race-level performance and premium construction. Built using FMF’s Resonance Chamber Technology™ (RCT) both internally and externally, this system smooths power delivery, expands the torque curve, and reduces sound output without sacrificing performance. Every component is designed to make your Honda hit harder, rev cleaner, and handle better.

With FMF’s Factory Forward Engineering, the muffler is moved closer to the motor to centralize mass and improve balance, while the shorter overall length makes it less vulnerable to damage in a crash. The system is made from aerospace-grade materials, available in Natural Aluminum with a Carbon Fiber end cap, and includes the legendary Titanium MegaBomb header — engineered to maximize exhaust velocity and torque across the rpm range. Each system is 100% hand-built in FMF’s Southern California factory, ensuring flawless fit and true factory performance.

Why We Like It:
It’s the best of FMF in one package — light, fast, and factory clean. The 4.1 RCT transforms your Honda with a deeper tone, sharper throttle response, and noticeably stronger power from bottom to top. It feels like a race bike the second you twist the throttle.

Why It’ll Work for You:
This system gives your bike more power everywhere — more punch down low, smoother midrange, and better over-rev. The titanium MegaBomb header boosts torque while trimming weight, and the compact design improves handling. It’s a long-term investment in performance that instantly makes your bike feel sharper, quicker, and more responsive.

Variants / Options:
Available in Natural Aluminum with Carbon Fiber End Cap. Compatible with modern Honda four-stroke motocross and off-road models.

Key Features:

• FMF Resonance Chamber Technology™ (RCT) for improved power and reduced sound
  
  

• Factory Forward Engineering for centralized mass and better handling
  
  

• Titanium MegaBomb header maximizes torque and throttle response
  
  

• Natural Aluminum canister with Carbon Fiber end cap for strength and style
  
  

• Rapid Tuning System (RTS) for easy maintenance and tuning
  
  

• Huge weight savings compared to stock exhausts
  
  

• Handcrafted in Southern California, USA
  
  

• Massive power gains throughout the rpm range