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 include advanced noise reduction technology with a maximum sound output of 96dB, made from aircraft-grade aluminium, high-strength stainless steel midpipe and endcap, designed for use with stock or FMF header systems, includes a screen insert spark arrestor, and is suitable for closed course use only. Specifications include item ID 044301, slip-on exhaust type, aluminium construction with a natural finish, stainless steel midpipe and endcap, screen insert spark arrestor, weight of 6.2 lbs (2.81 kg), and a single configuration.
- SKU
- 06-434.FMF.Q4
- Brand
- FMF Exhausts
- Availability
- In Stock (2)
FULL DESCRIPTION
FMF Q4 Exhaust Silencer
The FMF Q4 Exhaust Silencer is engineered for off-road performance while minimizing sound output. This slip-on muffler features innovative chambers, baffles, and a proprietary multi-stage packing designed to deliver championship-level power discreetly.
Constructed from durable aircraft-grade aluminum and high-strength stainless steel, the Q4 offers robust performance for demanding off-road conditions. It is designed to integrate seamlessly with either stock or FMF header systems, providing riders with enhanced performance without compromising noise levels.
Key Features:
- Developed through extensive championship off-road racing experience.
- Advanced noise reduction technology, typically operating below 93dB and never exceeding 96dB.
- Lightweight yet strong construction using aircraft-grade aluminum.
- Includes a high-strength stainless steel midpipe and endcap for enhanced durability.
- Designed for compatibility with stock or FMF header systems.
- Comes with a screen insert spark arrestor for safety.
- Suitable for closed-course competition use only.
- Features a simple slip-on, single configuration for easy installation.
Specifications:
- Exhaust Type: Slip-On
- Construction Material: Aluminum
- Midpipe Material: Stainless Steel
- Endcap Material: Stainless Steel
- Spark Arrestor: Included (Screen Insert)
- Weight: Approximately 6.2 lbs (2.81 kg)
- Configuration: Single


