FMF 025088 Fatty Pipe Exhaust System for KTM 85SX 105SX XC

The FMF Fatty Pipe is a legendary expansion chamber exhaust system designed specifically for KTM 85SX, 105SX, and XC models. As the most copied pipe design in the motocross industry, the Fatty Pipe has earned its reputation through decades of proven performance on tracks worldwide.

Key Features:

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

The Fatty Pipe's design enhances mid-range to top-end power while maintaining excellent low-end torque, making it ideal for riders who demand consistent, controllable power across the entire RPM range. FMF's proprietary tuning process ensures each pipe delivers maximum performance for its specific application.