Assalamu'alaykum and good evening, to start off I'm an amateur karter and I don't have my own kart. Basically if you want to start karting in Malaysia, I recommend you to join karting leagues which are(alhamdulillah) available in this country. Well you do need practicing(and the track) and learn basic first on the internet and the track itself if you want to be competitive at your first go. They use rental karts ranging from 80cc to 100cc, the higher classes(125cc) do have rental kart but cost very expensive and it would be cheaper to buy one albeit still expensive. It is after all a motorsport event.