A secondary air supply system is arranged efficiently and compactly, in a V-type engine including a front-side cylinder and a rear-side cylinder. A motorcycle includes an engine having a front-side cylinder and a rear-side cylinder with an air cleaner being disposed on the upper side of the engine. A secondary air supply system has a reed valve provided between the air cleaner and an exhaust passage of the engine and by which secondary air is supplied into the exhaust passage of the engine. Intake ducts for guiding air into the air cleaner are connected to left and right side surfaces of the air cleaner. The reed valve includes a front-side reed valve used for the front-side cylinder and a rear-side reed valve used for the rear-side cylinder.