Bro for KTM bikes a company called christini makes 2wd kits. I don't know is it available in India or not. I think its little bit costly. You can simply google christini 2wd dirt bikes you can see the 2wd drive kits. And also in YouTube ktm have 2wd with christini kits can see. And also christini is also making their own 2wd dirt bikes in 450 cc