Patent ID: 8550202

Claim:
A rear portion structure of a saddle-type vehicle, comprising: a swing arm swingably supported at one end thereof by a main frame and rotatably supporting a rear wheel at the other end thereof; a drive chain entrained about a drive sprocket provided on an engine and a driven sprocket provided on the rear wheel; a seat frame mounted on the main frame and supporting a seat, the seat allowing an occupant to sit thereon; an air-exhaust pipe extending from the engine and provided on a lower side of the seat frame; an extending portion of the seat frame, said extending portion extending rearward of the vehicle from the seat frame to the lower side of the air-exhaust pipe; and a chain guide roller configured to guide the drive chain, said chain guide roller being mounted on the extending portion, wherein the chain guide roller is arranged on an upper side of the drive chain and on a lower side of the air-exhaust pipe.