FMF Racing FMF041578 Honda CRF450X 2019-2026 Hex Q4 Spark Arrestor Muffler

Developed over years of championship offroad racing. Max sound output 96dB; most models below 94dB. Use with stock or FMF header. Constructed from aircraft-grade aluminum and high-strength stainless steel.

• Meets USFS and FIM World Enduro regulations
• Power gains throughout the entire RPM range
• Rugged design for off-road endurance
• Less sound equals more ground
• Spark arrestor included

The FMF Racing Hex Q4 muffler is developed from years of championship off-road racing experience and is designed for rugged off-road endurance. It delivers a maximum sound output of 96 dB, with most models below 94 dB, while providing power gains throughout the entire RPM range. The muffler can be used with either the stock header or an FMF header.

Key Features & Performance Benefits

• Sound control: Maximum sound output is 96 dB, with most models below 94 dB.
• Power delivery: Provides power gains throughout the entire RPM range.
• Durability: Constructed from aircraft-grade aluminum and high-strength stainless steel for rugged off-road use.
• Regulatory design: Meets USFS and FIM World Enduro regulations and includes a spark arrestor.

Product Specifications & Technical Data

• Brand: FMF Racing
• Part number: FMF041578
• Product type: Hex Q4 spark arrestor muffler
• Maximum sound output: 96 dB
• Construction: Aircraft-grade aluminum and high-strength stainless steel
• Header compatibility: Stock or FMF header
• Regulatory compliance: Meets USFS and FIM World Enduro regulations
• Spark arrestor: Included

What's Included

One FMF Racing Hex Q4 muffler with spark arrestor.

Fitment

Fits 2019-2026 Honda CRF450X models.

Fitments:
2019 Honda CRF450X Base
2020 Honda CRF450X Base
2021 Honda CRF450X Base
2022 Honda CRF450X Base
2023 Honda CRF450X Base
2024 Honda CRF450X Base
2025 Honda CRF450X Base
2026 Honda CRF450X Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1