I just went through this trying to figure out which lights fit. I just had a Trail Ready bumper put on the rear and it has 4" light holes. I called them and asked what lights go in there besides the cheap ones they offer. Any 4" post mounted light will go in there. I am putting the PIAA 510 Series (which is 4") fog lights in the rear ones. When I get the front bumper like yours, I will put a set of PIAA 510 driving lights and a set of PIAA 510 fog in it. They run just over $200 per set. You can get cheaper lights and they will be fine probably, but I like the look of the PIAA and they have that cool cover. Awesome bumper by the way!!!!