My son has a 99 Accord 4dr manual with 4cyl. It sits too low and has bottomed out damaging the hard lines. There are two brake lines and two other lines. The second set of lines looks to go to the rack and back to some box in the back near the axle. I have no idea what this is and haven't found anything like it on any Honda parts pages or other posts. Does anyone have some input on what these lines are going to and where I can find replacements? These lines and the brake lines are pretty long and I considered trying to replace the damaged section. But to do this I need to know if they are metric sized lines? I would have to cut them back and put in some flared fittings. Any help would be greatly appreciated. Thanks.

 

First image is of LX w/ABS.
Second is LX without ABS.

If the 'box' you mention is #6(abs)/#4(non-abs) that is the proportional valve.
Are the lines you need #7/8?
46330-S84-A00 PIPE C, BRAKE 186.92/130.84

Not sure with Honda, but most factory lines are made of unbendable/PITA to flare hard steel. Time/effort may be better to replace the lines totally.