FMF KTM 25150 FATTY-PIPE 50SX'09-23 TC50 '17-23FMF KTM 25150 FATTY PIPE 50SX'09 23 TC50 '17 23 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 youre looking for. More tractable power, improved throttle control