A snowmobile includes a chassis, an engine positioned in a front chassis portion and having at least one intake port and at least one exhaust port, an air intake system coupled to the intake port and comprising a duct being at least partially comprised of a porous material, and an exhaust system comprising an exhaust pipe having a stinger tube and a rear cone which are curved, with centerlines of the stinger tube and rear cone being concentric.

An off-road vehicle includes a frame, a vehicle cover, a prime mover assembly, an intake manifold, and an electrical control unit. An intake seat for the intake manifold is positioned above one of the rear side plates of the vehicle cover. An air filter for the intake manifold is positioned behind a rear baffle of the vehicle cover, which in turn is positioned behind the seat(s). The rear baffle defines an air filter access port, allowing the filter element in the air filter to be accessed and changed from within the cabin. Covers of the air filter access port and the air filter allow changing of the filter element without requiring any tools.

An off-road vehicle includes a frame, a vehicle cover, a prime mover assembly, an intake manifold, and an electrical control unit. An intake seat for the intake manifold is positioned above one of the rear side plates of the vehicle cover. An air filter for the intake manifold is positioned behind a rear baffle of the vehicle cover, which in turn is positioned behind the seat(s). The rear baffle defines an air filter access port, allowing the filter element in the air filter to be accessed and changed from within the cabin. Covers of the air filter access port and the air filter allow changing of the filter element without requiring any tools.

An off-road vehicle includes an air intake system that comprises an opening that, in operation, receives air, and an exhaust system that includes an exhaust stack positioned in the opening of the air intake system.

An off-road vehicle includes an air intake system that comprises an opening that, in operation, receives air, and an exhaust system that includes an exhaust stack positioned in the opening of the air intake system.

Disclosed is a wheeled vehicle. The wheeled vehicle includes various features for operation by a rider, such as a throttle actuation assembly and various components for operation and manipulation of the vehicle.

An intake duct that includes a first flange projecting outward from an edge of the intake duct on a throttle body side. An intake manifold that includes a second flange projecting outward from an edge of the intake manifold on a throttle body side. A plurality of spacers is provided between the first flange and the second flange around the throttle body. The first flange and the second flange are fastened via the plurality of spacers in a state where the throttle body is held between the intake duct and the intake manifold.

A system for controlling condensation associated with a vehicle engine air supply includes a shutter assembly configured to selectively allow airflow through the shutter assembly. An air supply cooler is configured to provide intake air to an engine. The air supply cooler is situated near the shutter assembly such that air flowing through the shutter assembly is incident on an exterior of the air supply cooler. A controller determines when at least one condition exists that is conducive to condensation within the air supply cooler and controls the shutter assembly to alter an amount of air incident on the exterior of the air supply cooler for controlling condensation in the air supply cooler.

A system for controlling condensation associated with a vehicle engine air supply includes a shutter assembly configured to selectively allow airflow through the shutter assembly. An air supply cooler is configured to provide intake air to an engine. The air supply cooler is situated near the shutter assembly such that air flowing through the shutter assembly is incident on an exterior of the air supply cooler. A controller determines when at least one condition exists that is conducive to condensation within the air supply cooler and controls the shutter assembly to alter an amount of air incident on the exterior of the air supply cooler for controlling condensation in the air supply cooler.

A two-wheeled vehicle includes a frame having a front frame portion, a mid-frame portion, and a rear frame portion. The mid-frame portion is coupled to the rear frame portion and the front frame portion. The vehicle further includes a plurality of ground-engaging members for supporting the frame. The front frame portion is removably coupled to the mid-frame portion with a plurality of frame members extending between the front frame portion and the mid-frame portion.