There are two types of skateboard truck heights: “HI” (high) and “LOW” (low). Trucks are the most repairable and customizable items on a Skateboard. You can, for example, change the nuts on the hanger axle, change the KingPin if it breaks or replace the gums with different hardnesses to obtain a more or less “loose” truck. Consult our truck buying advice page to choose the right ones for you!