FMF Power Bomb Header Pipe 044244 for 2007–2009 Yamaha YZ250F

The FMF Power Bomb is a four stroke header pipe unit that has a unique bulge precisely located in the header system. A "pre muffler" of sorts, the Power Bomb actually lowers sound output because it creates more surface area to absorb the sound medium (exhaust). The surface area of the perforated core lets the sound exit into the absorbing material (steel wool packing) and then allows the air to expand, cool and ramp back up with the higher pressure air. The result? The FMF Power Bomb is instrumental in reducing the decibel level on any four stroke and because of the expansion and contraction on exhaust through the system, the flow has been increased by nearly 10%. That means more power throughout the range.

The FMF Power Bomb Header Pipe is a performance-focused four-stroke exhaust header designed for the 2007, 2008, and 2009 Yamaha YZ250F. Featuring FMF’s precisely positioned Power Bomb bulge, this header functions as a pre-muffler by increasing the available surface area for exhaust sound absorption. The perforated core allows exhaust pulses to move into the surrounding packing material, helping reduce sound output while supporting efficient exhaust flow.

By allowing exhaust gases to expand, cool, and then accelerate through the system, the FMF Power Bomb Header can improve exhaust velocity and contribute to increased power throughout the rev range. The system is tuned for strong bottom-to-midrange performance, making it well suited to motocross and off-road applications where responsive power delivery is important. The header is also designed to preserve full-service access to the Yamaha YZ250F oil filter for easier routine maintenance.

This FMF Power Bomb Header uses manufacturer part number 044244 and vendor part number 044244. It fits 2007 Yamaha YZ250F, 2008 Yamaha YZ250F, and 2009 Yamaha YZ250F models. Verify your motorcycle model year and existing exhaust configuration before installation to ensure proper fitment.

Features:

• Performance Header: Four-stroke FMF Power Bomb header engineered to improve exhaust flow and power delivery.
• Sound Reduction: Bulged pre-muffler design increases surface area for exhaust sound absorption.
• Power Delivery: Tuned for responsive bottom-to-midrange performance.
• Exhaust Flow: Expansion and contraction within the header system can help improve exhaust velocity and overall engine response.
• Service Access: Designed to maintain full access to the oil filter for routine maintenance.
• Fitment: Fits 2007, 2008, and 2009 Yamaha YZ250F motorcycles.
• Brand: FMF.
• Manufacturer Part Number: 044244.
• Vendor Part Number: 044244.

Fitment:
2007 Yamaha YZ250F
2008 Yamaha YZ250F
2009 Yamaha YZ250F