Two-wheeled motor vehicle

A two-wheeled motor vehicle comprising:

• a body frame;
• a rear wheel swingable through an area relative to the body frame;
• an exhaust muffler disposed at a side of the rear wheel;
• a brake disc attached to the rear wheel at the side;
• a service caliper disposed on the brake disc for producing a braking force while the two-wheeled motor vehicle is traveling;
• and
• a mechanical caliper for quiescence that prevents rotation of the brake disc, the mechanical caliper being disposed on the brake disc separately from the service caliper;
• wherein, in a side view and in every position within the entire area through which the rear wheel is swingable, the mechanical caliper and the service caliper are located below different sites of the exhaust muffler that are each closest to the rear wheel than any other site of the exhaust muffler in respective cross sections taken in different axial positions of the exhaust muffler.