The KTM 790 Duke is a naked parallel-twin motorcycle, manufactured by KTM from 2017. The Duke's 799 cc (48.8 cu in) liquid cooled eight-valve DOHC engine uses a 285° crankshaft in order to mimic KTM's 75° V-Twins. Its power output is 105 bhp. The Duke is KTM's first parallel-twin bike; previously the factory had produced only singles and V-twins. . Released in 2018 for the …