High-performance B-type carbon brushes specifically engineered for the starter motors of Piaggio Ape Extra 3-wheelers (4th Generation). These brushes are manufactured using a specialized copper-graphite composite designed to handle the heavy-duty demands of cargo transportation and frequent start-stop urban cycles. The B-type configuration provides a secure, precision fit within the 4th generation starter assembly, ensuring high electrical conductivity, reduced friction, and reliable engine cranking for the vehicle's diesel engine.