FMF Fatty expansion chamber 04-16

• Made from high quality, extra strong and durable sheet steel
• Nickel-plated surface
• Wide, even rev band
• High rev speed
• More traction and better control under full throttle
• Including O-rings
• Recommended in combination with an FMF silencer for a perfectly matched full system with optimum performance

FITS:

MX:

• 125 SX 2004-2015

Enduro:

• 125 EXC 2005-2016