Anyone know who makes fender flares for an '02 4-door? I can only find bushwackers for the 2-door.

Try jcwhitney.com thats where I got my EGR fender flares for my 4 door 95 blazer.

Just checked them and they only have the 2-door model, but they have a pic of the 4-door. Do I need to modify that myself? The issue is that the back door cuts into the fender flare.

Well you can always modify the 2 door flares but that would be a lot of time invested. I guess just try and keep searching online, maybe ebay or something because modifying fender flares from a 2 door to a 4 would be a pain in the rear.

EGR is the only manufacturer of 4-door fender flares for our blazers. ~400 for the set.