What kind of power gains can I expect with this exhaust system?

This system is designed to provide massive power gains throughout the entire RPM range. The FMF Resonance Chamber Technology and overall design work together to improve exhaust flow, allowing your engine to perform at a higher level.

What materials is the FMF Factory 4.1 RCT exhaust made from?

The muffler is constructed from aerospace-grade titanium with a blue anodized finish and a carbon fiber end cap. The mid-pipe and header are made from durable stainless steel.

Does this exhaust system come with everything needed for installation?

The system includes the titanium muffler, stainless steel mid-pipe, and header. While it's designed for direct fitment, it's always recommended to refer to the manufacturer's installation instructions for any specific hardware or procedures required.

Specifications

Brand: FMF Racing
Part #: 045654

FMF Racing HQV FE450 20-23/KTM 450XCF 23 Anod TI Factory 4.1 RCT Sys w/SS MB Header/Mid

Name: FMF Racing HQV FE450 20-23/KTM 450XCF 23 Anod TI Factory 4.1 RCT Sys w/SS MB Header/Mid
Brand: FMF Racing
SKU: fmf-racing-fmf-racing-hqv-fe450-20-23-ktm-450xcf-23-anod-ti-factory-4-1-rct-sys--t14-686776
Price: 1293.43 USD
Availability: BackOrder

$1293.43

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.

FMF Racing Factory 4.1 RCT Exhaust System for HQV FE450 20-23/KTM 450XCF 23. Offers massive power gains throughout the RPM range.

Key Features

Fits HQV FE450 2020-2023 and KTM 450XCF 2023.
Features FMF Resonance Chamber Technology for improved exhaust flow and power.
Constructed from aerospace-grade titanium with a blue anodized finish and carbon end cap.
Shorter muffler design centralizes mass and reduces susceptibility to crash damage.
Includes stainless steel mid-pipe and header for durability.
Rapid Tuning System (RTS) allows for performance adjustments.

This exhaust system is designed for the HQV FE450 (2020-2023) and KTM 450XCF (2023). Please verify fitment for your specific vehicle.

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About this part

Product Details

This is the FMF Racing Factory 4.1 RCT exhaust system, designed for the HQV FE450 from 2020-2023 and the KTM 450XCF in 2023. It's built to give your bike a significant boost in power across the entire RPM range. The system features FMF's latest Resonance Chamber Technology, integrated both inside and outside the muffler, which helps improve exhaust flow and engine performance. This technology is a key part of how FMF extracts more power from your engine.

The Factory 4.1 RCT is constructed using only aerospace-grade titanium, meeting FMF's strict standards. The muffler itself is blue anodized titanium, giving it a distinct look, and it's finished with a carbon fiber end cap. A notable design element is its shorter overall length, which not only complements the Factory Forward Engineering – moving the muffler closer to the engine for better mass centralization – but also makes it less likely to sustain damage in a tip-over. This system includes a stainless steel mid-pipe and header, ensuring a solid connection and durability. The Rapid Tuning System (RTS) allows for adjustments to fine-tune the exhaust's performance.

This exhaust system is manufactured entirely at FMF's Southern California factory, ensuring close attention to detail and quality control throughout the production process. If you're looking to extract maximum performance from your HQV FE450 or KTM 450XCF, this system is built to deliver noticeable power improvements.