Bushings are the small urethane cushions inside your trucks that determine how your board turns. Stock bushings on most trucks are functional but generic — swapping them is a cheap way to tune exactly how your board responds to your riding style and weight.

Softer bushings (78a–87a) turn more easily and suit lighter riders or those who prefer a loose, reactive feel. Harder bushings (90a–96a) resist turning more and suit heavier riders or those who want a more stable, controlled truck. Most riders run a slightly harder cone bushing on top and a softer barrel on the bottom for a balanced turn and rebound feel.

All bushings are brand-specific to truck type but most standard bushings fit most trucks. If you're unsure what you need, bring your trucks in — it's a quick check.