sentences:  From 1991 to 2000, AJP participated in the National Championships of Enduro, winning five titles in a row from 1996 to 2000.AJP also participated in the National Off-Road Championships, with victories in 1996, 1997 and 1999.In 2001 AJP marketed a new motorcycle, the AJP PR4 125 with a 4-stroke engine.