Originally Posted by
ptempel
It should have. Its the plastic thing hanging down from the back with two plastic supports going to each side. I replaced the locking mechanism on my older Giro Atmos. For the Prolight, its the Roc Loc 4:
Let me google that for you
Again, my Prolight didn't come with one.
Giro Unveils Prolight, ?World?s Lightest? Bicycle Helmet