my front rotors are slotted i think they came on all the later cherokees and i havent had issues with them, they be after market though since i havent seen them on anything else. Either way i think the best/cheapest brake up grade is using outer knuckles, rotors, and calipers off of a grand cherokee they use a 2 piston caliper and r really beast, the best thing i they will bolt right up. I've thought about doing the swap but i really want to hold off till i get a D44 bc ill get a brake up grade with those.