What materials is this muffler made from?

The muffler body is constructed from a proprietary alloy of aerospace-grade titanium with a blue anodized finish. The end cap is made from carbon fiber.

What is the benefit of the Resonance Chamber Technology (RCT)?

The RCT design, applied both internally and externally, helps to improve exhaust flow and sound characteristics. It's also integrated into a shorter muffler body that moves mass closer to the motorcycle's center.

Does this muffler come with everything needed for installation?

This is a slip-on muffler, meaning it replaces your stock muffler. While it's designed for a direct fit, it's always best to consult the manufacturer's installation instructions to confirm if any additional hardware or specific tools are required for your Beta 450RX.

Specifications

Brand: FMF Racing
Part #: 045690

FMF Racing 23+ Beta 450RX Anod Titanium Fact-4.1 RCT Slip-On Muffler w/ R. Carbon Cap

Name: FMF Racing 23+ Beta 450RX Anod Titanium Fact-4.1 RCT Slip-On Muffler w/ R. Carbon Cap
Brand: FMF Racing
SKU: fmf-racing-fmf-racing-23-beta-450rx-anod-titanium-fact-4-1-rct-slip-on-muffler-w-t14-714628
Price: 990.71 USD
Availability: BackOrder

$990.71

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 2023 and newer Beta 450RX models.
Features FMF's Resonance Chamber Technology (RCT) for improved performance.
Constructed from a proprietary alloy of aerospace-grade titanium.
Blue anodized titanium muffler body with a carbon fiber end cap.
Shorter overall length helps centralize mass and reduces susceptibility to crash damage.
Designed to provide massive power gains throughout the RPM range.

This muffler is designed for the 2023 and newer Beta 450RX. Please verify fitment with the manufacturer's specific application guide for your exact model year.

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About this part

Product Details

The blue anodized titanium body of this FMF Racing Factory 4.1 RCT slip-on muffler is crafted from a proprietary alloy, meeting the brand's exacting specifications. This muffler is designed specifically for the 2023 and newer Beta 450RX, incorporating FMF's latest Resonance Chamber Technology (RCT) both internally and externally. This advanced design helps to centralize mass by moving the muffler closer to the motor, which also results in a shorter overall length that's less prone to damage in a crash.

Constructed entirely at their Southern California factory, this muffler utilizes aerospace-grade materials for its build. The Rapid Tuning System (RTS) allows for adjustments, and the design aims for significant power gains across the entire RPM range. The muffler is finished with a distinctive carbon fiber end cap, adding a touch of premium detail to the performance-oriented package.

This slip-on muffler is a direct replacement for your stock unit, making installation more straightforward. While it's designed to bolt on, always refer to the manufacturer's installation instructions for any specific details or recommended procedures to ensure a proper fit and optimal performance.