Patent ID: 7963354

Claim:
An air-inlet structure for a motorcycle in which an engine is supported on a pair of left and right main frames extending rearward and downward from a head pipe for supporting a front wheel, comprising: an air box for supplying air to the engine, said air box being arranged above the engine and including air-inlet ports; and a left air-inlet duct and a right air-inlet duct for introducing air, said air-inlet ducts being connected to the air box, said air-inlet ducts extending along outer sides of the main frames in a fore-and-aft direction of a vehicle body and being connected to the air-inlet ports of the air box at the back of the main frames, wherein the leftmost point of the left air-inlet duct is located further left to the leftmost point of the left main frame, and the rightmost point of the right air-inlet duct is located further right to the rightmost point of the right main frame, wherein a portion of the left air-inlet duct within a width range of a left air-inlet port of the air-inlet ports and a portion of the left main frame within the width range of the left air-inlet port are overlapped in a top view, and a portion of the right air-inlet duct within a width range of a right air-inlet port of the air-inlet ports and a portion of the right main frame within a width range of the right air-inlet port are overlapped in the top view, and wherein the leftmost point of the portion of the left air-inlet duct within the width range of the left air-inlet port is located further left to the leftmost point of the left main frame within the width range of the left air-inlet port, and the rightmost point of the portion of the right air-inlet duct within the width range of the right air-inlet port is located further right to the rightmost point of the portion of the right main frame within the width range of the right air-inlet port.