What is the mileage of KTM Duke 250? What is the mileage of KTM Duke 250? KTM 0 Maxabout Team 108 Rep. August 22, 2017 KTM Duke 250 Mileage Kamaljeet answered August 22, 2017 Please Login or Sign up. Connect with: Facebook Google × Login Username or Email Address Password Remember Me Follow 0 Question stats ActiveAugust 22, 2017Views311 timesAnswers0 answersFollowers0 followers