L1: motion raised from the ground. The distance between the lower point of the motorcycle steering plate and the center of the wheel pin is measured.
L2: bike resting on the ground. It gives a blow to “settle” the suspension. The distance between the lower point of the motorcycle steering plate and the center of the wheel pin is measured.
L3: ground bike with rider in the saddle. The distance between the lower point of the motorcycle steering plate and the center of the wheel pin is measured.