SIS (motorbikes)

SIS was an important Portuguese motorbike manufacturer, based in Anadia. In addition to motorbikes it produced light three-wheeler pickup trucks (a type of vehicle once very popular, especially in Southern European countries). Its products used Sachs engines and were quite successful in the local market, especially in the 1970s.

References

*Robert M. Croucher, "The Observer Book of Motorcycles", Warne, London (1980)