These cases have never been mounted.
Included sides and rear cases.
These case don't have mounting hardware or anything on them for mounting. The area that would be used for mounting is
flat like the top shows in one of the pics. I got these with the motorcycle I bought. The previous owner said they need to be custom mounted. I think he was going to install a plate inside, drill holes to connect to side crash bars and rear tail plate using screws.
Sides are - 20"x 9 1/2" x 13" and rear is 17" x 13" 17"