FMF Megabomb Stainless Steel 4-Stroke Exhaust Header

Elevate your motorcycle's performance with the FMF Megabomb 4-stroke header, a premium stainless steel exhaust component engineered to deliver significant power gains. This high-performance header is designed for serious riders seeking an edge on the track, optimizing exhaust flow for a broader, more potent powerband.

Description

The FMF Megabomb Stainless Steel 4-Stroke Exhaust Header is a revolutionary design that has redefined exhaust performance for 4-stroke machines. Its unique spherical chamber, or "Megabomb," acts as a pre-muffler, significantly boosting low-to-mid range power while broadening the overall powerband. This innovative design also helps to reduce sound output by up to 1.5 dB, allowing for a more aggressive yet compliant riding experience on closed courses. Crafted from durable stainless steel, this header is built to withstand the rigors of off-road and motocross racing, ensuring longevity and consistent performance. It's specifically engineered to integrate seamlessly with FMF silencers, forming a complete, high-performance exhaust system. While optimized for current racing standards, it's important to note its future compatibility with evolving FIM sound regulations. This header is designed for specific 4-stroke models, including the YZ250F from 2027 onwards, ensuring precise fitment and maximum output.

Features & Highlights

• Revolutionary Megabomb Design: Patented technology that significantly enhances low-to-mid range power, broadens the powerband, and reduces sound output compared to traditional headers.
• Durable Stainless Steel Construction: Built for extreme conditions, providing superior strength, corrosion resistance, and long-lasting performance on the track.
• Optimized for 4-Stroke Performance: Specifically tuned to maximize the output of 4-stroke engines, delivering a noticeable boost in throttle response and horsepower.
• Seamless FMF Silencer Integration: Engineered to perfectly match FMF silencers, ensuring optimal exhaust flow and a complete, high-performance system.
• Competition-Ready Design: Developed for closed course use, offering peak performance for racing and aggressive off-road riding.

Technical Specifications

• Material: Stainless Steel
• Product Type: Exhaust Header
• Engine Type: 4-Stroke

Important to Know

• This FMF Megabomb header is intended for closed course use only.
• Requires an FMF silencer for proper fitment and optimal performance.
• Please note: This product will not pass 2025 FIM sound regulations.