' pends on the bike...some of mine have them built in, others are add ons. Unfortunately they are not a one size fits all proposition. I have more than one that was cut too short and would not hold the bike up properly. Also parking on an uneven surface can be a challenge. I have found 2 solutions that work for me at this time, one is a double legged stand, the other is a long stick that looks similar to a fold up tent frame post, that you can flip open and it will support the heaviest bike when placed under the edge of the tubing near the seat. The guy that makes and sells them is a member on here but I can't recall what the thing is called

Aaron