Casal, produced in Portugal from 1964 to 2000, was a motorcycle and moped manufacturer founded in Aveiro by former employees of Zündapp's Portuguese operations. The company became known for producing its own two-stroke engines and a wide range of motorcycles, mopeds, scooters, and off-road machines, including popular models such as the K168, K181, Boss, and Trial series. Casal gained a strong reputation in Portugal and several export markets for reliability, affordability, and mechanical simplicity. Characterized by durable engineering, in-house engine production, and an important role in Portuguese motorcycling, Casal remains one of the most significant motorcycle brands in Portugal's industrial history.