Brake: products utilized to stop or decelerate a bicycle. Rim brakes and disc brakes are operated by brake levers, that are mounted to the handlebars. Band brake is a substitute for rim brakes but can only be mounted for the rear wheel. Coaster brakes are operated by pedaling backward Frame: https://bikeengineoil94826.sharebyblog.com/34806062/what-does-engine-bike-exhaust-mean