FMF Gnarly Pipe Expansion Chamber — KTM 250 XC-W / 300 XC-W (also Husqvarna TE250/TE300) 2017–2019

A tuned expansion chamber that reshapes the power curve — sharper throttle response and a broader spread of usable power.

Fits: KTM 250 XC-W / 300 XC-W (also Husqvarna TE250/TE300) 2017–2019.

Why riders pick it:

• Expansion chamber tuning sharpens throttle response and broadens the power spread
• Works with your stock silencer or any FMF 2-stroke silencer
• Classic FMF chamber design refined for consistent, predictable power delivery
• Direct bolt-on installation, no tuning required

⚠️ For closed-course competition / off-road use only — not legal for street use in some states. Confirm your local regulations.

Not sure it fits your bike? Send us your year and model and we'll confirm.