FMF Powercore 4 / Powercore 4 Hex Muffler

Maximize Power Output with Advanced Muffler Technology

Experience superior performance with the FMF Powercore 4 / Powercore 4 Hex Muffler. Engineered for maximum power and torque gains, this premium muffler combines durable construction with cutting-edge Hi-Flo technology to deliver exceptional performance across the entire RPM range.

Key Performance Features

Hybrid Construction Design

• Durable stainless steel and aluminum construction
• Optimized weight-to-strength ratio
• Superior corrosion resistance
• Professional-grade manufacturing quality

Advanced Hi-Flo Technology

• Internal core shape utilizes proprietary Hi-Flo technology
• Enhanced sonic evacuation for higher exhaust flow
• Optimized internal geometry for maximum power output
• Increased exhaust velocity for better performance

Premium Internal Components

• Space Age internal packing material for maximum longevity
• Superior heat resistance and durability
• Consistent performance over extended use
• Advanced sound dampening properties

Technical Specifications

• Construction: Stainless steel and aluminum hybrid
• Technology: Hi-Flo internal core design
• Packing: Space Age internal materials
• Spark Arrestor: Removable included
• Compatibility: Works with FMF or stock OEM headers
• Installation: Direct bolt-on replacement

Performance Benefits

Power Enhancement

• Overall increase in power and torque output
• Enhanced throttle response across RPM range
• Improved exhaust flow efficiency
• Optimized sonic evacuation technology

Versatile Compatibility

• Compatible with FMF aftermarket headers
• Works with stock OEM header systems
• Flexible installation options
• Universal performance upgrade solution

Long-Term Reliability

• Space Age packing materials for extended life
• Durable hybrid construction
• Consistent performance characteristics
• Reduced maintenance requirements

Installation & Compatibility

Direct bolt-on installation with included hardware. Compatible with both FMF aftermarket headers and stock OEM header systems. Removable spark arrestor included for versatile riding applications. Professional installation recommended for optimal 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 Powercore 4 represents advanced muffler engineering, combining innovative Hi-Flo technology with premium construction materials for maximum performance gains.