What Is the Heaviest Motorbike?

Answer:

The heaviest motorcycle is the Harzer Bike Schmiede, created by Tilo Niebel of Zilly, Germany, which weighed 4.749 tonnes (10,470 lb) on 23 November 2007.

The massive machine, which is 5.28 m (17 ft 4 in) long, 2.29 m (7 ft 6 in) tall and powered by a Russian tank engine, took a team of welders and mechanics nearly a year to build.