What is included with this muffler?

This FMF Racing Powercore 4 S/A muffler includes the aluminum muffler body, stainless steel Hi-Flo end caps, and a removable spark arrestor. Installation hardware is typically sold separately.

How does this muffler improve performance?

The Powercore 4 muffler is engineered to improve exhaust flow, which helps increase horsepower and torque throughout the engine's entire power band. This results in more usable power for various riding conditions.

Is this muffler street legal?

The muffler includes a removable spark arrestor, which is often required for use on public lands or trails. Always check local regulations to ensure compliance for your specific riding area.

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Trusted Since 1957

Est. 1957

Specifications

Brand: FMF Racing
Part #: 041025

FMF Racing Honda TRX400EX 99-08/TRX400X 09-14 Powercore 4 S/A Muffler

Name: FMF Racing Honda TRX400EX 99-08/TRX400X 09-14 Powercore 4 S/A Muffler
Brand: FMF Racing
SKU: fmf-racing-fmf-racing-honda-trx400ex-99-08-trx400x-09-14-powercore-4-s-a-muffler-t14-686834
Price: 440.31 USD
Availability: BackOrder

$440.31

On Backorder — Expected to ship by May 9, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2001-2008 Honda TRX400EX Sportrax. This FMF Racing Powercore 4 muffler offers improved horsepower and torque with durable aluminum construction.

Key Features

Fits 2001-2008 Honda TRX400EX Sportrax.
Aluminum performance muffler construction.
Durable stainless steel components and Hi-Flo end caps.
Designed to increase horsepower and torque throughout the power band.
Removable spark arrestor is included.
Slip-on design for easier installation.

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About this part

Product Details

With this FMF Racing Powercore 4 S/A muffler, you're getting a performance upgrade specifically designed for your 2001-2008 Honda TRX400EX Sportrax. It's built to boost horsepower and torque across the entire range of your engine's power band, making that power more usable for any kind of riding you do.

This muffler is constructed from aluminum for a good balance of performance and strength, and it features stainless steel components, including the Hi-Flo end caps. It's a completely redesigned unit for modern applications, and it comes with a removable spark arrestor to help keep you compliant with land use regulations. The slip-on design makes installation straightforward.