KTM FMF Fatty Expansion Chamber

35 years of racing experience: The FMF factory pipes have been specially developed for the hardships of offroad life. That’s why they’re made from high quality, extra thick, hardwearing sheet steel. An elegant appearance is ensured by the nickel-plated, stainless, polished surface. For years and years.

Fitment: 65 SX 02-08


  • Broader and more usable rev range
  • Higher top speed
  • More traction, better control when accelerating
  • Including O-rings

For a perfectly tuned and performance-optimised overall system, we recommend combination with an FMF factory silencer.

KTM FMF Fatty Expansion ChamberSXS08065500

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Borne out of decades-long racing experience and manufactured from high-grade, hardwearing sheet steel to brave the off-roads, the KTM FMF Fatty Expansion Chamber allows for wider rev range, excellent control in high speeds and strong traction.



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