FMF Q4 Exhaust Silencer 09-22 Yamaha YFZ 450 R X - FMF 044301

The FMF Q4 044301 exhaust is engineered for off-road enthusiasts seeking maximum performance with minimal noise. Designed with innovative chambers, baffles, and a proprietary multi-stage packing, the Q4 delivers championship-level power while significantly reducing sound output. Constructed from aircraft-grade aluminium and high-strength stainless steel, this slip-on muffler ensures durability and top-tier quiet performance without sacrificing power. Compatible with either stock or FMF headers, it allows riders to experience true performance discreetly.

Features

• Developed through championship off-road racing experience
• Advanced noise reduction technology; max sound output of 96dB, with most models below 93dB
• Made from aircraft-grade aluminium for lightweight strength
• Incorporates high-strength stainless steel midpipe and endcap
• Designed for use with stock or FMF header systems
• Includes a screen insert spark arrestor
• Suitable for closed course use only
• Easy slip-on, single configuration

Specifications

• Item ID: 044301
• Exhaust Type: Slip-On
• Construction: Aluminium
• Finish: Natural
• Midpipe: Stainless Steel
• Endcap: Stainless Steel
• Spark Arrestor: Screen Insert (included)
• Weight: 6.2 lbs (2.81 kg)
• Configuration: Single
• Carb Warning: Not applicable

Vehicle Fitment

Yamaha

• YFZ450R (2009–2022)
• YFZ450X (2010–2011)

Supplier SKU: 06-434.FMF.Q4. 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.