FMF 025151 Fatty Pipe Expansion Chamber KTM - 65SX

The FMF Fatty Pipe is a performance expansion chamber designed for 2009-2012 KTM 65SX motorcycles. This legendary exhaust pipe has earned its reputation as the most copied pipe in the world, delivering proven power gains and reliability that riders trust.

Key Features:

• Broader, smoother powerband for improved throttle response across the RPM range
• Durable nickel-plated finish resists corrosion and maintains appearance
• Includes replacement O-rings for proper installation and sealing
• Precision-engineered expansion chamber design optimizes exhaust flow
• 100% made in the USA with FMF's legendary quality standards

The Fatty Pipe is engineered to enhance mid-range and top-end power while maintaining excellent low-end response. The nickel-plated construction provides long-lasting durability against the elements and extreme riding conditions. FMF's proprietary design has been refined over decades to deliver consistent, reliable performance gains that transform your bike's powerband.