FMF 4.1 RCT Titanium Exhaust System - Honda CRF450R / RWE / RX / R-S (2021-2025)

Overview

When you're chasing podiums, you need gear that delivers. The FMF Factory 4.1 RCT Titanium Exhaust System is built for serious riders who demand maximum performance with minimal weight. Featuring FMF's Resonance Chamber Technology™ and Factory Forward Engineering, this system boosts power across the RPM range while improving handling through better mass centralization.

Key Features

• Race-Ready Performance: Gains horsepower throughout the RPM range for a stronger pull from bottom to top.
• Ultra-Lightweight Construction: Aerospace-grade titanium system with a carbon fiber end cap slashes weight.
• Blue Anodized Finish: Eye-catching look with FMF’s signature factory style.
• Resonance Chamber Technology™: Reduces sound while maintaining power with internal and external RCT tuning.
• Rapid Tuning System (RTS): Easily adjust or service with FMF's quick-access design.
• MegaBomb Header: Titanium header delivers additional torque and throttle response.
• Crash-Resistant Design: Shorter overall length keeps the system tucked and protected.

Specifications

• Construction: Titanium
• Muffler Finish: Blue Anodized
• End Cap: Carbon Fiber
• Header Type: MegaBomb Titanium
• Spark Arrestor: Screen Insert Included
• Quiet Insert: 94dB Included
• Configuration: Single
• Weight: 9.0 lbs.
• Intended Use: Closed Course Only

This is the system used by top pros—when you’re ready to ride like one, bolt this on and hold it wide.