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)