FMF 021040 Fatty Pipe Expansion Chamber for Honda - CR250R 2003-2004

The FMF Fatty Pipe is a legendary expansion chamber designed to deliver a broader, smoother powerband for the 2003-2004 Honda CR250R. As the most copied pipe in motocross racing, the Fatty has earned its reputation through decades of proven performance on tracks worldwide.

Key Features:

• Broader, smoother powerband for improved rideability across the RPM range
• Durable nickel-plated finish resists corrosion and maintains appearance
• Precision-engineered expansion chamber design maximizes two-stroke performance
• Includes replacement O-rings for complete installation
• 100% made in the USA with FMF's legendary quality standards

FMF's Fatty Pipe has been the gold standard for two-stroke performance for over three decades. The carefully tuned header and expansion chamber work together to optimize exhaust scavenging, delivering strong bottom-to-mid power that helps you drive out of corners harder and maintain momentum through technical sections. The nickel-plated finish not only looks great but provides long-lasting protection against the harsh elements of motocross racing.