The "upper" bump stops don't take any abuse. They are only used when the car is up in the air and the suspension is all the way DOWN. You don't even really need them. They just give the UCA something soft to rest on. The bumpers will never be used while driving. They are way too far away from the control arms at ride height. Get which ever ones are cheapest IMO. Now, if you meant "lower" control arm bump stops, then "dodj" is correct. If the car is lowered, you'll need short bump stops.