The older Vespa models have a drum brake. The brake drum is firmly connected to the wheel or rim. When the brake is applied, the brake shoes are spread out and pressed against the drum. A major problem with this now obsolete technology is that it achieves significantly lower braking performance than disc brakes. For this reason, the newer models have switched to disc brakes without exception. The brake caliper or its piston grips the brake disc and thus reduces the speed.