FMF 045425 PowerBomb Stainless Steel Header for Beta RR/RS 400-520

The FMF PowerBomb Header is a high-performance four-stroke exhaust header featuring FMF's patented PowerBomb module positioned at a precise location in the initial stage of the exhaust system. This innovative design maximizes exhaust flow and power delivery through advanced acoustic engineering.

Key Features:

• Dual Chamber Design: The distinctive "bomb" chamber allows exhaust gases to expand and cool before ramping back up at higher velocity, increasing flow by nearly 10%
• Sound Reduction: Acts as a pre-muffler, lowering sound output by up to 1.5 decibels through increased surface area for sound absorption
• Performance Tuning: Tuned for bottom-to-mid range power delivery, ideal for off-road and enduro riding
• Perforated Core: Steel wool packing inside the perforated core further enhances sound absorption while optimizing exhaust flow
• Easy Maintenance Access: Designed to provide full service access to oil filter during routine maintenance
• Durable Construction: Built from corrosion-resistant stainless steel for long-lasting performance

This header delivers snappier throttle response and noticeable performance gains throughout the powerband. The expanded exhaust chamber increases flow velocity while meeting sound restrictions for closed-course competition use.