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< > $449.95 Model Year 20002001200220032004200520062007 2 Stroke Yamaha Models YZ125YZ250 Qty :  Our Fatty Gold Series pipe broadens the powerband and provides a healthy power increase everywhere. Improved throttle response, a linear powerband and enhanced over-rev all add up to a pipe that everyone will benefit from. The Fatty pipe is our most popular pipe for that same reason. If you’re riding trails, tracks or in the open desert, this pipe has what you’re looking for.   Number one pipe on the market. FMF Racing’s Tru-Flo stamping process ensures a perfect fit and optimum performance. Ok