What is the main benefit of the Resonance Chamber Technology?

FMF's Resonance Chamber Technology helps to tune the exhaust note and improve power delivery across the entire RPM range. It's an internal and external design feature that contributes to the muffler's performance characteristics.

Will this muffler fit my stock exhaust header?

This muffler is designed as a direct replacement for the stock muffler on your Suzuki RMZ450. It is intended to integrate with the stock header pipe.

What is the Rapid Tuning System (RTS)?

The Rapid Tuning System (RTS) is a feature that allows for fine-tuning of the muffler's performance. This helps riders optimize the exhaust for their specific riding style or track conditions.

Specifications

Brand: FMF Racing
Part #: 043365

FMF Racing Suzuki RMZ450 18-24 Anod TI Factory 4.1 RCT SO Muffler w/ R. Carbon Cap

Name: FMF Racing Suzuki RMZ450 18-24 Anod TI Factory 4.1 RCT SO Muffler w/ R. Carbon Cap
Brand: FMF Racing
SKU: fmf-racing-fmf-racing-suzuki-rmz450-18-24-anod-ti-factory-4-1-rct-so-muffler-w-r-t14-686730
Price: 825.59 USD
Availability: BackOrder

$825.59

On Backorder — Expected to ship by Apr 28, 2026

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

Key Features

Fits Suzuki RMZ450 models from 2018-2024.
Features FMF's latest Resonance Chamber Technology for improved sound and power.
Constructed from aerospace-grade titanium for a strong yet lightweight build.
Blue anodized titanium muffler body with a carbon fiber end cap.
Shorter overall length moves the muffler closer to the motor to centralize mass and reduce crash damage susceptibility.
Designed to deliver massive power gains throughout the entire RPM range.

This muffler is designed for Suzuki RMZ450 models from 2018 to 2024. Please verify fitment with your specific vehicle.

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About this part

Product Details

If you're looking to get the most out of your Suzuki RMZ450's exhaust system, especially for track days or competitive riding, this FMF Racing Factory 4.1 RCT muffler is a serious upgrade. It's built to maximize your bike's performance, giving you that extra edge when you need it most. This muffler is designed to work with your RMZ450's stock header, offering a significant improvement over the original equipment.

FMF has incorporated their latest Resonance Chamber Technology, both inside and outside the muffler, to help tune the sound and improve power delivery across the entire RPM range. They've also made the muffler shorter, which not only looks good but also moves it closer to the bike's center of mass. This helps with overall handling and makes it less likely to get damaged in a tip-over. The construction uses aerospace-grade titanium, ensuring it's both strong and lightweight, and it's finished with a striking blue anodized titanium body and a carbon fiber end cap. Everything is manufactured right here in Southern California to FMF's strict standards.

This muffler is designed to provide massive power gains throughout the RPM range, and it features FMF's Rapid Tuning System (RTS) for fine-tuning. While this is a direct replacement for your stock muffler, you might consider pairing it with other FMF components or ensuring your bike's fuel mapping is optimized to take full advantage of the improved exhaust flow.