What materials are used in this FMF exhaust system?

The system features a blue anodized titanium muffler with a carbon fiber end cap, and a titanium mid-pipe and header. All materials are aerospace-grade titanium.

How does the Resonance Chamber Technology work?

FMF's Resonance Chamber Technology is incorporated both internally and externally within the muffler. This design helps to improve exhaust flow and sound characteristics, contributing to the overall performance gains.

What is the benefit of the shorter muffler design?

The shorter overall length of the muffler makes it less prone to damage from impacts or crashes. It also allows the muffler to be mounted closer to the engine, which helps to centralize the vehicle's mass for improved handling.

Specifications

Brand: FMF Racing
Part #: 044478

FMF Racing Yamaha YZ450F 24-25 Anod Fact 4.1 RCT w/ R. Carbon Cap Comp Sys w/TI MB Header/ Mid Pipe

Name: FMF Racing Yamaha YZ450F 24-25 Anod Fact 4.1 RCT w/ R. Carbon Cap Comp Sys w/TI MB Header/ Mid Pipe
Brand: FMF Racing
SKU: fmf-racing-fmf-racing-yamaha-yz450f-24-25-anod-fact-4-1-rct-w-r-carbon-cap-comp--t14-680954
Price: 1513.59 USD
Availability: BackOrder

$1513.59

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.

FMF Racing Yamaha YZ450F 24-25 Anod Fact 4.1 RCT w/ R. Carbon Cap Comp Sys w/TI MB Header/ Mid Pipe. Get massive power gains throughout the RPM range.

Key Features

This system includes a blue anodized titanium muffler with a carbon fiber end cap, a titanium mid-pipe, and a titanium header.
Designed for the 2024-2025 Yamaha YZ450F.
Incorporates FMF Resonance Chamber Technology for improved performance.
Shorter muffler design is less susceptible to crash damage and centralizes mass.
Constructed from aerospace-grade titanium.
Offers massive power gains throughout the RPM range.

This exhaust system is designed to fit the 2024-2025 Yamaha YZ450F.

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About this part

Product Details

This FMF Racing Factory 4.1 RCT exhaust system includes a blue anodized titanium muffler with a carbon fiber end cap, a titanium mid-pipe, and a titanium header. It's designed to fit the 2024-2025 Yamaha YZ450F. This system uses FMF's latest Resonance Chamber Technology, both inside and outside the muffler, to improve performance. The design also makes the muffler shorter, which helps reduce the risk of damage from impacts and moves the muffler closer to the engine for better mass centralization. This setup is built entirely at FMF's Southern California factory using aerospace-grade titanium that meets their strict standards.

You can expect significant power increases across the entire RPM range with this exhaust. The Rapid Tuning System (RTS) allows for adjustments to fine-tune the performance to your liking. The use of titanium in the header and mid-pipe, combined with the anodized titanium muffler, results in a well-built and durable exhaust system that's also lighter than stock. This system is a popular choice for riders looking to get the most out of their YZ450F.