What components are included in this FMF Racing exhaust system?

This is a complete system that includes the 4.1 RCT muffler with a carbon fiber end cap, as well as the Titanium MB header pipe. It is designed to be a full replacement for your stock exhaust.

What is the benefit of the Titanium MB header pipe?

The Titanium MB header pipe is lighter than a traditional steel pipe, which helps reduce overall weight on your motorcycle. Titanium also offers good heat resistance and can help improve exhaust gas flow.

Does this exhaust system require any special tools for installation?

While this system is designed as a direct replacement, it's recommended to consult the manufacturer's installation instructions for any specific tool requirements or torque specifications. Having basic motorcycle mechanic tools will be necessary.

FMF Racing Exhaust System 044484 - Yamaha YZ450F

Name: FMF Racing 26+ Yamaha YZ450F Factory Anod 4.1 RCT w/ Carbon Cap - Complete System w/ TI MB Header
Brand: FMF Racing
SKU: fmf-racing-fmf-racing-26-yamaha-yz450f-factory-anod-4-1-rct-w-carbon-cap-complet-t14-888121
Price: 1513.57 USD
Availability: BackOrder

FMF Racing 26+ Yamaha YZ450F Factory Anod 4.1 RCT w/ Carbon Cap - Complete System w/ TI MB Header

$1513.57

On Backorder

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

FMF Racing complete exhaust system for Yamaha YZ450F. Features TI MB header and carbon fiber end cap.

Key Features

This is a complete exhaust system for the 2026+ Yamaha YZ450F.
Includes the 4.1 RCT muffler with a carbon fiber end cap.
Comes with a Titanium MB header pipe.
Designed to improve performance and sound over the stock exhaust.

This exhaust system is designed for the 2026 and newer Yamaha YZ450F models. Please verify fitment for your specific vehicle.

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Product Details

This is the complete exhaust system from FMF Racing, designed for the 2026 and newer Yamaha YZ450F. You get the full package here: the 4.1 RCT muffler with its distinctive carbon fiber end cap, and the Titanium MB header pipe. This system is built to replace your stock exhaust and give your YZ450F a noticeable upgrade in performance and sound.

The heart of this system is the 4.1 RCT muffler, known for its efficient flow and durable construction. It's paired with a Titanium MB header pipe, which is lighter than steel and helps improve exhaust gas scavenging. The carbon fiber end cap isn't just for looks; it adds a touch of high-performance flair and helps keep the muffler cool to the touch. FMF Racing has a long history in off-road racing, and this system reflects that experience, aiming to provide a strong, reliable performance boost for your bike.

When installing this system, you'll want to ensure all connections are properly sealed to prevent leaks, which can affect performance and sound. It's a good idea to check the manufacturer's instructions for specific torque values and any recommended sealants. This complete system is designed to be a direct replacement for your stock exhaust, making the installation process straightforward for those comfortable working on their motorcycle.