FMF Factory 4.1 RCT Exhaust Silencer 19-25 Honda CRF 450 X - FMF 041587

The FMF Racing Factory 4.1 RCT Titanium Anodized Slip-On with Carbon Cap (041587) is engineered for riders demanding top-level performance and advanced durability. This slip-on exhaust features FMF Resonance Chamber Technology™ both internally and externally, with a compact design ideal for mass centralisation and reduced crash susceptibility. Manufactured entirely in Southern California from aerospace-grade titanium, the blue anodised muffler is complemented by a lightweight carbon end cap, delivering exceptional power gains and significant weight savings.

Features

• Closed course use only
• Advanced FMF Resonance Chamber Technology™ for optimised performance
• Blue anodised titanium muffler with carbon fibre end cap
• Massive power gains throughout the RPM range
• Significant weight reduction for improved handling
• New Rapid Tuning System (RTS) for fast adjustments
• Proprietary alloy-grade titanium construction made to FMF standards
• Centralised mass for better manoeuvrability
• Screen insert spark arrestor included
• Optional 94dB quiet insert available (sold separately)
• Made in the USA

Specifications

• Item ID: 041587
• Type: Slip-On
• Configuration: Single
• Construction: Titanium
• Finish: Blue Anodised
• Midpipe: Stainless Steel
• Endcap: Carbon fibre
• Spark Arrestor: Screen insert (included)
• Carb Warning: No
• Quiet Insert: 94dB insert (sold separately)
• Weight: 6.3 lbs

Vehicle Fitment

Honda

• CRF450X (2019–2025)

Supplier SKU: 06-9911.FMF.FACT. Supplier availability is subject to change.

Why Buy From FDY Performance?

Shop with FDY Performance Ltd, a UK-based motorcycle parts and accessories retailer. We offer friendly product support and UK delivery options. Please check your bike make, model and year against the fitment information before ordering.