I've used the full force ones and they are less like a sway bar than you might be accustomed to. They don't "give" or allow you to use different sized bars for force. It's a rigid pivot mechanism that forces the opposing arm to move with the alternate arm. Works well though and I didn't really notice any loss of motion except when on really uneven terrain. Then it's because one tire is contacting the ground while the other is being held up in the air.