FMF - Factory 4.1 RCT Titanium Slip-On Exhaust (Yamaha)

FMF - Factory 4.1 RCT Titanium Slip-On Exhaust (Yamaha)

FMF built the Factory 4.1 RCT Titanium Slip-On for Yamaha riders who want that full factory look, sound, and power — without going broke on a complete system. Using FMF’s latest Resonance Chamber Technology™ inside and out, this slip-on smooths out power delivery while keeping sound levels in check. The titanium canister is light, strong, and built with a unique shape that increases internal volume to absorb more sound without choking performance.

Whether you’re lining up at the gate or ripping through singletrack, the 4.1 RCT delivers crisp throttle response, smoother midrange torque, and stronger over-rev. The shorter length keeps it tucked in and less prone to damage, while FMF’s Factory Forward Engineering design moves the muffler closer to the engine for better balance and handling. Add in a removable spark arrestor, and this system is just as happy in the woods as it is on the moto track.

Why We Like It:
You bolt it on and instantly feel the difference — better throttle pickup, quicker revs, and a cleaner exhaust note that’s loud enough to sound fast but still controlled. It looks like something off a pro’s bike and delivers the same kind of smooth, usable power.

Why It’ll Work for You:
This slip-on is built to make your Yamaha feel lighter and more responsive everywhere on the track. The titanium construction shaves weight while the Resonance Chamber evens out back pressure for stronger low-to-mid torque and a smoother top-end pull. It’s quieter than you’d expect, built tough enough for hard racing, and easy to maintain thanks to FMF’s clever endcap and spark arrestor design. You’ll get more performance, better throttle control, and a pro-level sound that fits any kind of riding.

Key Features:

• Incorporates FMF’s latest Resonance Chamber Technology™
  
  

• Patented core shape reduces sound while maintaining full power
  
  

• Unique canister design increases internal volume for better tone control
  
  

• Factory Forward Engineering centralizes mass and reduces crash damage
  
  

• Titanium construction for maximum strength and minimum weight
  
  

• Tuned core specifications optimized for Yamaha power delivery
  
  

• Includes removable spark arrestor for track or trail use
  
  

• Made in the USA