If you have an rtx or Ltx and you want it to wheelie you're kinda fighting a losing battle, truth be known, there's a lot of technology in the slide action rear suspension to make it so it doesn't stand on end. It's got the torque and power to do it, but those suspensions are designed to keep the sled balanced and plated so that you're putting all the power to the ground. If you have an xtx (which I doubt you do because they would pull the front end easy) they have an uncoupled rear suspension so getting the front end in the air is much less effortless. If you do have an rtx or Ltx and just want to pull the skis you can just take the rear shaft out that has the adjustable transfer blocks on it. It'll wheelie on demands. Unfortunately when you do that it defeats the whole purpose of the coupled rear suspension so the sled won't handle as good and it will affect performance as well.