ride yamaha 100 sport bike for 5 years as a uni student. really bully the motor kaw2. not even slow down at bump,service every 5000KM (2T motor doesn't require frequent oil change is it?) . no problem whatsoever with the engine. the motor doesn't even require special key to start the engine. can use even my room key. hahaha. really nice that day. when the bike is missing, i know my friend borrow it. no need to worry someone steal the bike. really robust and low fc bike. my friend even call the bike turbo racing because of the plate no TR XXXX. when finish study, just give the bike to my neighbor. lots of sweet stuff happened with the bike