KTM FMF Fatty Expansion Chamber

Fitment: 250 SX 11-15, 250/300 EXC 11-15

Features:

• 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