Motorcycle built by MZ. One of the first motorcycles produced by the reborn MZ, the Mastiff is based around a 650cc four-stroke five valve single cylinder Yamaha Raptor engine. It has supermotard styling, though it is not as radical as the offerings from KTM and CCM. It makes a good bike to ride every day, and is very reliable. Being very upright, narrow, and tall, it is an excellent bike for riding through traffic, though does not fare so well at high speeds.