FMF PowerBomb Header Pipe 044225 for Yamaha YZ450F and WR450F

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 PowerBomb Header Pipe, manufacturer part number 044225 and vendor part number 044225, is a performance-focused four-stroke exhaust header designed for select Yamaha YZ450F and WR450F motorcycles. Its precisely positioned PowerBomb bulge functions as a pre-muffler by increasing surface area within the header system, helping reduce exhaust sound while improving exhaust flow.

The perforated core allows exhaust gases to move into the surrounding sound-absorbing material, expand, cool, and then accelerate as pressure increases through the system. This controlled expansion and contraction can improve exhaust flow by nearly 10 percent, delivering stronger performance throughout the power range. The header is tuned for responsive bottom-to-midrange performance and is designed for full-service access to the oil filter.

Fitment includes 2007-2009 Yamaha YZ450F models and 2007-2013 Yamaha WR450F models, including 2010, 2011, 2012, and 2013 WR450F applications. Verify the motorcycle model and year before installation to ensure proper compatibility. The FMF PowerBomb Header Pipe is intended for riders seeking improved four-stroke exhaust performance, practical service access, and reduced sound output in a durable header design.

Features:

• Performance Header: Four-stroke header pipe designed to improve exhaust flow and overall engine performance.
• PowerBomb Design: Precisely positioned bulge increases internal surface area to help reduce exhaust sound and improve gas expansion.
• Performance Tuning: Tuned for responsive bottom-to-midrange power delivery.
• Exhaust Flow: Expansion and contraction through the system can increase exhaust flow by nearly 10 percent.
• Service Access: Designed to provide full access to the oil filter for convenient maintenance.
• Fitment: Fits 2007-2009 Yamaha YZ450F and 2007-2013 Yamaha WR450F motorcycles.
• Brand: FMF.
• Manufacturer Part Number: 044225.
• Vendor Part Number: 044225.

Fitment:
2007 Yamaha WR450F
2007 Yamaha YZ450F
2008 Yamaha WR450F
2008 Yamaha YZ450F
2009 Yamaha WR450F
2009 Yamaha YZ450F
2010 Yamaha WR450F
2011 Yamaha WR450F
2012 Yamaha WR450F
2013 Yamaha WR450F
2014 Yamaha WR450F
2015 Yamaha WR450F