FMF 045620 Megabomb Header Stainless Steel Performance Exhaust

The FMF 045620 Megabomb Header represents advanced exhaust technology designed to deliver measurable performance gains for four-stroke motocross and off-road motorcycles. This stainless steel header utilizes FMF's proprietary chamber design featuring a series of strategically placed ports that allow exhaust gases and sonic waves to expand and re-enter the main exhaust flow, optimizing exhaust velocity and scavenging efficiency.

Key Performance Features:

• Delivers the low-end torque characteristics of a long header combined with the high-RPM power of a short header design
• Provides up to 3 horsepower gain over stock when paired with compatible FMF mufflers
• Improves bottom to mid-range power delivery with enhanced throttle response
• Larger midsection chamber creates additional surface area for sound dissipation, reducing noise output by up to 1.5 dB
• Works effectively with sound-restricting mufflers for trail and track compliance
• Compact design is less susceptible to damage than traditional long headers

Construction:

• Durable stainless steel construction for long-term reliability
• Two-piece design for easier installation and serviceability
• Mounts using stock mounting locations with all necessary hardware included
• Professional-grade construction used by factory racing teams

The Megabomb technology works by creating controlled exhaust expansion that optimizes exhaust flow dynamics throughout the RPM range. This results in broader, more usable power across the powerband while maintaining reasonable sound levels. Ideal for motocross, supercross, and technical trail riding applications. For closed course competition use only.