The KTM RC390 can hit a top speed of 210 kmph with the modifications related to its weight reduction and track oriented part exchanges. Firstly, the bike needs to shed some weight, which is done by removing all the additional parts required for a road legal motorcycle. This includes rear foot rests, mirrors, headlights, mudguards and many of the parts are replaced with lighter carbon fiber parts. The heavy exhaust system is also replaced with a free flow exhaust and rest is done through modifications of the ECU, increasing some red-line limit if possible. These modifications are not possible on a real life road as many parts are illegal and track based only.