Features: FMF's 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. If you’re riding trails, tracks or in the open desert, this pipe has what you’re looking for. FMF Racing’s Tru-Flo stamping process ensures a perfect fit and optimum performance. Includes O-rings. NOTE: Will not pass 2025 FIM sound regulation.