Patent ID: 8006791

Claim:
A motorcycle, comprising: a vehicle body frame having an air passage extending through a portion thereof; a fresh air inlet located proximate a front portion of the vehicle body frame; an air routing duct member extending longitudinally in a front-rear direction of the vehicle body frame, the air routing duct member configured to receive fresh air which has been introduced through the fresh air inlet and to deliver said fresh air to the air passage of the vehicle body frame, said air routing duct member having an auxiliary air inlet opening formed therein; said air routing duct member having at least one resonance chamber formed therein; and an instrumentation support member operatively attached to the air routing duct member, said instrumentation support member having a hollow section therein which defines at least one auxiliary air chamber, wherein the instrumentation support member has an opening therein which connects the auxiliary air chamber to the air routing duct member via the auxiliary air inlet opening in the air routing duct member, so as to permit fluid communication therebetween; wherein said at least one resonance chamber is formed separately from said at least one auxiliary air chamber.