I might be able to help but confused on where exactly you want the said 20" bars . Also what material is the rack ?

might be aluminum if so im no help , try sticking a magnet to it , steel will stick aluminum will not .
Will check some time after beer-o-clock.maybe use electrical conduit and secure with small bolts drilled from underside ?
Throw that thing in the trash because fire won't work.
Winner winner!!!!!!Buy a new bike.
my call is jb weld or similar epoxy. chances are if its steel its stupid thin pot metal than wont weld worth a damn.
I can help ya out if you want to drop it off. Text me. 973-445-3329Winner winner!!!!!!
Remember, he needs Nu Metal.I can come over and play metal if needed.
Can you come play symphony of destruction @jimvreeland while I weld @MadisonDan ’s towel rack?I can come over and play metal if needed.