250 SX/EXC 24-25 / 300 SX/EXC 24-27 FACTORY RACING EXPANSION CHAMBER

Suitable for standard silencers
Untreated surface
Uncompromising race look
Sensitive response
Increased performance
Improved throttle response and increases in both power and torque
Substantial weight saving

Saving almost 20% weight compared to the stock expansion chamber (ca. 0,4 kg)