FMF Factory 4.1 RCT Full Exhaust System 041605 - Honda CRF450R / CRF450RX 2021-2026

FMF Factory 4.1 RCT Full Exhaust System 041605 - Honda CRF450R / CRF450RX 2021-2026

Product Description

The FMF Factory 4.1 RCT Full Exhaust System integrates Resonance Chamber Technology, featuring a patented core shape that lowers decibels while maintaining maximum power output. Internal ducts within the system's chambers increase internal volume to improve exhaust flow, generating power gains across the entire powerband.

Engineered with FMF's Factory Forward Engineering to centralize mass and reduce vulnerability to crash damage, this premium full system combines a lightweight titanium header pipe with a blue anodized titanium muffler canister and a carbon fiber end cap. It includes a QuietCore 94 dB insert and meets both AMA and FIM sound requirements.

Top Features: FMF Factory 4.1 RCT Full System

• RCT (Resonance Chamber Technology) uses a patented core shape that lowers decibels while maintaining maximum power output.
• Internal ducts in the chambers increase internal volume for improved exhaust flow and power gains throughout the entire range.
• Factory Forward Engineering design centralizes mass and makes the system less prone to crash damage[cite: 1].
• Innovative rear end cap allows simple installation of tuning tip inserts or spark arrestors with the removal of four screws[cite: 1].
• Meets AMA and FIM sound requirements, and includes a QuietCore 94 dB insert[cite: 1].

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this full exhaust system include a QuietCore insert?
A: Yes, it includes a QuietCore 94 dB insert and meets AMA and FIM sound requirements[cite: 1].

Q: What materials are used to construct this full exhaust system?
A: It is built using lightweight titanium for both the header and muffler canister, finished with an anodized blue look and a carbon fiber end cap[cite: 1].

Expert Pro-Tip

Expert Pro-Tip: When installing a full titanium exhaust system, ensure all contact points and slip-joints are thoroughly wiped clean of oils or fingerprints using contact cleaner. Oils will permanently burn into high-grade titanium once the engine goes through its initial heat cycle.

Recommended Pairings:

• Honda 4-Stroke Performance Parts
• Honda CRF450R Performance Parts & Accessories
• Motorcycle Tools & Accessories

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