Although Scion has lots of auto parts with impressive performance, the brake drum still needs repair and maintenance after a long time of usage. The brake drum is part of the drum brake system which works in correlation with a brake shoe to decelerate the rotation of a wheel. The main parts of a drum brake system include the following: backing plate, brake drum, brake shoes, wheel cylinder, springs, and guide pins. Consumers can get great Scion parts and services online 24 hours a day and 7 days a week. Scion will remain classic and prevailing for its useful parts.