FMF Factory 4.1 RCT Exhaust Silencer 18-26 Yamaha 450 YZ WR F FX - FMF 044445

Combining advanced FMF Resonance Chamber Technology™ and Factory Forward Engineering, the FACTORY 4.1 RCT TITANIUM ANODIZED SL (Slip-On) with Carbon Cap delivers substantial power gains while centralising mass for improved handling. Constructed entirely from aerospace-grade titanium and carbon fibre, this slip-on exhaust balances high performance and superior durability. Precision manufactured in California, its blue anodised finish and carbon endcap further reduce weight and add a distinctive look for performance-driven Yamaha off-road riders.

Features

• Incorporates FMF Resonance Chamber Technology™ internally and externally for optimised performance.
• Compact, crash-resistant profile with short overall length.
• Aerospace-grade blue anodised titanium construction with carbon endcap for ultimate strength and weight reduction.
• Includes screen-type spark arrestor and 94dB quiet insert.
• Rapid Tuning System (RTS) for quick tuning adjustments.
• Exclusively designed for closed-course use.

Specifications

• Type: Slip-On
• Configuration: Single
• Construction: Titanium
• Finish: Blue Anodised
• Midpipe: Titanium
• Endcap: Carbon
• Spark Arrestor: Screen Insert (included)
• Quiet Insert: 94dB Insert (included)
• Weight: 8.3 lbs (3.77 kg)
• FMF Item ID: 044445

Vehicle Fitment

Yamaha

• WR450F (2019–2024)
• YZ450F (2018–2026)
• YZ450FX (2019–2025)

Supplier SKU: 06-1784.SIL.FTC. 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.