FMF Fatty Pipe Expansion Chamber

The FMF Fatty Pipe expansion chamber (also called a 2-stroke exhaust pipe or Gold Series Fatty pipe) is a performance exhaust upgrade for Honda two-stroke motorcycles and ATVs. It is designed to broaden and smooth the power curve. That gives you stronger throttle response and more usable power across the rev range.

Key Features:

• Broader powerband: Improves low-end and mid-range power, with a linear power delivery and better over-rev.
• Computer designed and dyno tested: Developed to make power gains where each machine needs them most.
• Tru-Flo stamping process: Helps ensure a precise fit and consistent performance.
• Durable steel construction: Made from strong 19-gauge steel with a nickel-plated finish.
• Made in the USA: Built by FMF Racing, a well-known name in off-road and motocross exhaust systems.

Suited to trail, dune, track and racing use, the Fatty Pipe gives riders better rideability and a noticeable gain over a stock pipe. Choose the child item that matches your machine.