A motorcycle frame is a motorcycle's core structure. It supports the engine, provides a location for the steering and rear suspension, and supports the rider and any passenger or luggage. Also attached to the frame are the fuel tank and battery. At the front of the frame is found the steering head tube that holds the pivoting front fork, while at the rear there is a pivot point for the swingarm suspension motion. Some motorcycles include the engine as a load-bearing stressed member; while some other bikes do not use a single frame, but instead have a front and a rear subframe attached to the engine.
Triton: A Triumph engine in a tubular steel Norton Featherbed frame
Magnesium framed Elf 5
Greeves 250DCX Sportsman 1962
Double cradle frame on Honda CB750
A motorcycle is a two or three-wheeled motor vehicle steered by a handlebar from a saddle-style seat.
A classic Norton motorcycle
1955 NSU Lambretta 150 scooter
A cruiser (front) and a sportbike (background)
A Ural motorcycle with a sidecar