No, modern motorcycles generally do not use drum brakes as the primary braking system. Drum brakes were commonly used in motorcycles in the past, but advancements in braking technology have led to the widespread adoption of disc brakes in modern motorcycles.
Disc brakes offer several advantages over drum brakes, including better stopping power, improved heat dissipation, and more consistent performance. They consist of a rotor attached to the wheel and a caliper that houses brake pads. When the rider applies the brake lever or pedal, the caliper squeezes the brake pads against the rotor, generating friction and slowing down the motorcycle.
Disc brakes are more efficient in dissipating heat, which is particularly important during prolonged or heavy braking, as excessive heat can lead to brake fade or reduced braking performance. Additionally, disc brakes offer more precise control and modulation, allowing riders to apply varying amounts of braking force more easily.
While disc brakes are the primary braking system in modern motorcycles, it's worth noting that some motorcycles, particularly smaller or less expensive models, may still feature drum brakes on the rear wheel as a secondary braking system. However, the front wheel, which provides the majority of the stopping power, is typically equipped with a disc brake.