FMF 041546 Factory 4.1 RCT Anodized Titanium Slip-On Muffler With Carbon End Cap — Honda TRX450R

FMF RACING — Premium Anodized Blue Titanium Canister, Resonance Chamber Technology, and Carbon Fiber Euro End Cap Slip-On Performance Exhaust for Honda TRX450R Sport ATVs

Unleash the podium-climbing performance of your high-performance sport quad with the premium FMF 041546 Factory 4.1 RCT Slip-On Muffler. Engineered specifically for the iconic Honda TRX450R, this exhaust system incorporates FMF’s groundbreaking Resonance Chamber Technology™ both internally and externally. The specialized shape lowers exhaust decibel levels without restricting flow, allowing the engine to breathe with maximum efficiency. Utilizing their proprietary Factory Forward Engineering design, FMF shortens the overall muffler length and moves the mass closer to the motor. This centralizes mass across the chassis, sharpening your quad's cornering agility while keeping the silencer safely tucked away from crash damage.

Constructed entirely from aerospace-grade materials at FMF's state-of-the-art Southern California facility, this slip-on features a stunning blue anodized titanium canister that drops massive weight compared to original equipment. The internal structural core and durable mid-pipe are crafted from high-grade stainless steel to take a beating on the track, while the sleek Euro-style end cap is molded from premium carbon fiber. This setup yields massive power gains throughout the entire RPM range, giving you more snap off the gate and hard-pulling overrev down the straights. Equipped with the Rapid Tuning System (RTS), swapping out inner inserts or adding a spark arrestor screen to meet local trail guidelines is fast and effortless.

• Resonance Chamber Technology: Patented internal and external chamber design optimizes exhaust wave pressure to maximize power output while lowering decibels.
• Factory Forward Design: Shorter overall canister configuration centralizes mass for better handling and reduces exposure to roost and crash damage.
• Anodized Blue Titanium: Premium lightweight aerospace-grade titanium body sheds massive pounds and adds a distinct factory look to your machine.
• Carbon Fiber Euro End Cap: Ultra-lightweight and heat-resistant carbon fiber end cap styling gives your quad a high-end racing profile.
• Rapid Tuning System (RTS): Simplifies trackside noise or spark arrestor adjustments with quick-access internal baffling provisions.
• Southern California Heritage: 100% designed, tested, and manufactured in the USA using top-tier structural materials.

Moto-House MX Pro Tip:

The Honda TRX450R is a legendary sport quad, but a restrictive stock silencer heavily holds back its aggressive Unicam engine. Swapping to this Factory 4.1 RCT blue titanium slip-on is the ultimate way to boost throttle response and unleash a throaty, race-ready exhaust note. Installation Tip: When installing the mid-pipe over your head pipe flange, use a thin, uniform bead of high-temperature copper silicone around the slip joint. This creates a perfect airtight seal and prevents annoying exhaust popping on deceleration. Tuning Advice: Because this high-performance exhaust greatly increases airflow, you must adjust your air/fuel mixture. For carburetor-equipped TRX450R models, rejetting the carb with a larger main and pilot jet is highly recommended to avoid running lean and ensure maximum safe horsepower gains.

Muffler Material	Mid-Pipe & End Cap Specs	Primary Compatibility
Anodized Blue Titanium Canister	Stainless Steel Pipe / Carbon Fiber End Cap	Honda TRX450R Sportrax (2004)
Weight: 7.0 lbs (Lightweight)	Resonance Chamber / RTS Equipped	Honda TRX450R (2005 - 2012)
Exhaust Style: Oval Slip-On	Works with Stock or FMF Headers	Riding Style: Sport ATV / Motocross

FAQ Questions

Q) Does this muffler include a pre-installed USFS-approved spark arrestor screen?
A) No, the Factory 4.1 RCT arrives as an open race-course silencer to ensure uncompromised exhaust flow. However, thanks to the Rapid Tuning System (RTS), adding an FMF quiet insert or screen spark arrestor is incredibly quick and easy.

Q) Can I bolt this slip-on muffler directly onto my original stock Honda head pipe?
A) Yes, this slip-on exhaust is engineered with universal inlet sizing to clamp perfectly onto your stock OEM header or step up to an aftermarket FMF Powerbomb or Megabomb header down the road.

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