Exhaust Body and Rear

The FMF Gold Series Factory Fatty Pipe is engineered to enhance the performance of your Yamaha YZ250 motorcycle from 1999 to 2026. Its construction utilizes 19-gauge steel for the header portion, offering optimum strength and durability. The body and rear of the pipe are made from thinner 20-gauge steel, contributing to increased weight savings and a potential half-horsepower increase. The Factory Fatty pipe features a raw, un-plated, and oiled finish, reminiscent of the "works" pipes used by factory racing teams. All seams are meticulously hand-pounded after stamping to ensure smooth flow transitions between sections, contributing to its factory appearance and performance. This product includes O-rings on most models for a complete installation.