With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performance. The Fatty broadens and smoothes out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-rev. No matter what type of riding you do, the Fatty has the benefits you're looking for. More tractable power, improved throttle control Provides power gains throughout entire power band Carbon steel with a nickel plated finish for maximum durability FMF Racing's Tru-Flo stamping process ensures a perfect fit and optimum performance. Can be used with FMF or stock silencer (unless noted) Fits: BETA RR250 2T 2020-2021 RR300 2T 2020-2021 RR300 Racing 2T 2017-2021 Beta RR 2T 250 2023 RR 2T 300 2023