FMF Quiet Performance "Q4" & Q4 Hex Exhaust

Achieve Maximum Performance with Minimal Sound Output

Experience the perfect balance of power and sound control with the FMF Quiet Performance "Q4" & Q4 Hex Exhaust. Engineered with advanced internal technology, this premium exhaust system delivers exceptional performance while maintaining strict sound compliance for noise-sensitive riding environments.

Key Performance Features

Advanced Sound Control Technology

• Incorporates internal baffles and chambers for optimal sound management
• Space age sound absorbing materials reduce noise output
• Well under 96db sound output on most machines
• Satisfies strict sound requirements for regulated riding areas

U.S. Forestry Approved Components

• U.S. Forestry approved spark arrestor included
• Maintenance free, stainless steel spark arrestor screen
• Compliant for public land and forestry service areas
• Professional-grade safety and environmental protection

Performance-Focused Engineering

• Accelerates exhaust flow for enhanced performance
• Minimal power loss despite sound reduction
• Optimized internal geometry for maximum efficiency
• Professional-grade construction quality

Technical Specifications

• Sound Output: Well under 96db on most applications
• Spark Arrestor: U.S. Forestry approved, maintenance free
• Screen Material: Stainless steel construction
• Construction: Advanced baffle and chamber system
• Materials: Space age sound absorbing technology
• Availability: Q4 Hex Exhaust available for current models only

Performance Benefits

Sound Compliance

• Meets strict 96db sound requirements
• Suitable for noise-regulated riding areas
• Reduced sound output without performance sacrifice
• Professional sound dampening technology

Forest Service Compliance

• U.S. Forestry approved spark arrestor system
• Maintenance free stainless steel screen
• Safe for public land riding where permitted
• Environmental protection and fire prevention

Power Delivery

• Accelerated exhaust flow for enhanced performance
• Minimal power loss compared to unrestricted systems
• Optimized flow characteristics
• Maintained throttle response across RPM range

Installation & Compatibility

Direct bolt-on installation with included hardware. Q4 Hex Exhaust is only available for current models listed in fitment guide. Ideal for riders who need to meet strict sound regulations and forestry requirements while maintaining performance.

Legal Notice & Compliance

Important: Some offroad models may contain emission control devices. Certain aftermarket parts may remove or modify these devices. Removal or modification of emission control devices is illegal in California unless used exclusively for closed course competition. This product is intended for closed course competition use ONLY and should never be used on public lands or highways.

Why Choose FMF Racing

FMF Racing has been the leader in exhaust technology for decades, providing championship-winning performance to professional racers and enthusiasts worldwide. The Q4 represents the pinnacle of quiet performance engineering, combining advanced sound control with U.S. Forestry compliance for riders who demand both power and responsible environmental stewardship.