FMF Fatty Pipe Expansion Chamber — Honda CR125R 2000–2001

This FMF expansion chamber is pipe-tuned for a broader, more tractable power delivery than the stock unit.

Fits: Honda CR125R 2000–2001.

Why riders pick it:

• Low-end and midrange focused chamber tuning for broad, tractable power delivery
• Ideal for tight trails and technical terrain where snappy top-end power isn't the priority
• Works with your stock silencer or any FMF 2-stroke silencer
• 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.