i am lucky. my helmet has a spot where a spot on the chin comes off.. so i just got it to that and its been good. after a good hill climb i sound like darth vader. its awesome.
as you can see it leaves just a little space so i never noticed any air flow difference.
whoever thought of this product is
but whoever did their website should be shot. not one place does it show how it actually mounts... do i have to drill? i dont fucking know it says nothing... if you hire a detective he could maybe find a pic that shows its sticky tape and they say they sell replacement "hooks" and "adhesive tape" but what kind of tape?
this pic is sketchy...
looks like it might be peeling off there.