Look at your scooter and match up the bmx headset to the one thats on your scooter. Not difficult at all. To take it out you're going to have to take the fork, bars, etc. off the scooter then use a flat head screw driver and a hammer to pound the headset cups out of the head tube. Once you have the old scooter headset out, hit the new headset in with a rubber mallet or a use a piece of wood on top of the headset cup and hammer it on like that, Make sure it's going in straight or you could mess shit up. good luck...