I just installed a set of Trail Attacks yesterday, and had the same confusion until I did a little searching and found that they don't mark them. I used dynabeads anyway though so no matter (hopefully). I won't get to give them a thorough test until monday, but they do turn in faster than the OEM Trailwings.
2010 Triumph Tiger 1050se
2009 DL650A - sold
2005 DL650 - dearly departed
"I am enthusiastic over humanity's extraordinary and sometimes very timely ingenuities. If you are in a shipwreck and all the boats are gone, a piano top buoyant enough to keep you afloat that comes along makes a fortuitous life preserver. But this is not to say that the best way to design a life preserver is in the form of a piano top. I think we are clinging to a great many piano tops in accepting yesterday's fortuitous contrivings as constituting the only means for solving a given problem." - R. Buckminster Fuller