When shooting with flash you can see that the original reflectors shine well, the purple stripe on the edge is not the biggest color compared to others, but they make my bike unique to me and they seem bright enough for the night as I saw car headlights shining on them one night. It seems that the peak brightness occurs when it is illuminated at a certain angle. Installation was easy, you had to get on the floor a bit and move the wheels if you don't have a wheel stand.