my checker pro cover has help up at speeds up to and exceeding 135 mph
now its not 150+ but its damn fast and its benn more them `1 time for more then a short
now it did notice at speeds of 85ish that i get a lot of vibration due to the wing catching the wind but go faster and it goes away
kinda odd
im gonna take the red (cover) and the yellow once i get it in a few weeks (no cover yet) rams and run them both at the same speed on the same road to see if its really the cover adding to the wind vibration
jd