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Motorcycle frame

Triton: A Triumph engine in a tubular steel Norton Featherbed frame

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[1] 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.[2]

  1. ^ Note: ... such as the Ducati 900 SS
  2. ^ Note: An example is the Vincent HRD

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