Wow Homeyba you are correct. I stand corrected. I had this memory of reading aero bars were not allowed on their rides. I did an advanced Google search for "aero" on
http://www.planetultra.com Sure enough no rules talking about aero. Thanks for calling me out on this one. I am doing their King of the Mountains series right now so an aero bar will not do much for me with all the climbing, but later in the year I will be doing long flat rides where the bars will come in handy.