Forum › Category: Comparison between › KTM RC 125 top speed 0 Vote Up Vote Down Akter asked 3 years ago KTM is the most attractive bike in India and Bangladesh. But I don\’t have any idea of KTM RC125 top speed? Question Tags: KTM RC125 Top speed1 Answers 0 Vote Up Vote Down Farhan Sadik Staff answered 3 years ago KTM RC 125 is a full-faired naked sports bike. As a 125cc bike, its engine performance is just amazing. It can reach the top speed of 125 km/h (approx).