Telescopic fork

Instead, a wishbone and an inboard monoshock perform suspension duties, and the forks serve to locate the front wheel and control steering.

[2] However, undamped telescopic forks were used on bikes made by The Scott Motorcycle Company from the beginning of production in 1908,[3] and the Danish Nimbus used them from 1934 on.

[4]Conventional telescopic forks invariably have a pair of fork tubes, or "stanchions", at the top, clamped to a triple tree (also called a triple clamp or a yoke), and the sliders are at the bottom, attached to the front wheel spindle.

On most modern motorbikes this system is inverted, with the "sliders" and the spring/damper unit at the top, clamped to the yoke, while the stanchions are at the bottom.

This is done (1) to reduce unsprung weight by having the heavier components suspended, and (2) to improve the strength and rigidity of the assembly by having the strong large-diameter "sliders" clamped in the yokes.

This in turn allows for greater overlap of the sliders over the stanchion tubes, which improves stiffness and helps to reduce flex.

Conventional (on left) and USD forks
Early oil-damped telescopic fork on a 1939 BMW R12
1968 BMW R60US with conventional telescopic fork
Telescopic fork in upside down design, with stanchions at the bottom.
The upper triple clamp joins the top of the fork tubes and the handlebar to the frame of a Honda 919