FMF 041025 Powercore 4 Slip-On Muffler — Honda TRX400EX / TRX400X (1999-2013) Performance

FMF 041025 — Powercore 4 Slip-On Performance Muffler for Honda TRX400EX & TRX400X — Optimized Power, Lightweight Durability, and Track-Proven Versatility

Revitalize your Honda TRX400EX or TRX400X with the FMF 041025 Powercore 4 Slip-On Muffler. Designed by industry-leading exhaust engineers, the Powercore 4 is built to significantly increase horsepower and torque across the entire power curve. Whether you are attacking technical trail sections, ripping through open dunes, or competing on a closed-course track, this muffler delivers a noticeable power boost that is both manageable and highly effective for every style of riding.

The Powercore 4 is engineered for the perfect balance of weight reduction and structural longevity. It features a high-grade aluminum canister paired with a durable stainless steel Hi-Flo endcap, ensuring the system can handle the intense heat and vibrations of high-performance ATV riding. For riders who enjoy diverse terrain, the included removable spark arrestor ensures that you remain compliant with public land regulations while maintaining the signature, aggressive FMF exhaust note. With its anodized champagne finish, this slip-on is as visually striking as it is mechanically superior.

• Power-Curve Optimization: Developed to provide a smooth, broad increase in both horsepower and torque for improved throttle response and acceleration.
• High-Strength Construction: Lightweight aluminum canister paired with a rugged stainless steel Hi-Flo endcap for long-lasting durability.
• Trail-Ready Versatility: Includes a removable spark arrestor, allowing you to quickly switch between closed-course racing and legal trail riding.
• Signature Aesthetics: Features a sleek anodized champagne finish that complements the classic styling of your Honda TRX400.
• Precision Engineering: Designed specifically as a direct slip-on upgrade for easy installation on 1999-2005 Honda TRX400EX and 2009, 2012-2013 TRX400X models.
• Proven FMF Quality: Built with decades of racing heritage to ensure performance consistency and reliability under the most demanding conditions.

Moto-House MX Pro Tip:

Upgrading to a slip-on is the quickest way to shed weight and improve your engine's breathing. Installation Tip: Always clean the slip-joint connection thoroughly and use a high-temp exhaust gasket or sealant to ensure a tight, leak-free seal that maximizes performance. Tuning Advice: To get the most out of this slip-on, we highly recommend re-jetting your carburetor. A slightly larger main jet will ensure optimal combustion and keep your engine running cool and powerful.

Technical Specs	Construction	Compatibility
Slip-On Design	Aluminum/Stainless Steel	Honda TRX400EX
Oval Style	Anodized Champagne	Honda TRX400X
Weight: 5.6 lbs	Removable Spark Arrestor	1999-2013 Models

FAQ Questions

Q) Is this muffler street legal?
A) This Powercore 4 slip-on is designed as an off-road performance part. Please check local regulations regarding sound and emissions for your specific riding area.

Q) Do I need to re-jet my carburetor?
A) While a slip-on is a bolt-on upgrade, we highly recommend checking your carburetor jetting to ensure the best performance and to prevent the engine from running too lean.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. We are the best shop in Central Florida with lightning-fast shipping.