I bought this kit to replace those pesky rear fender seat mount inserts that are held on with c-clips and rattle around. The kit installed perfectly and actually looks really nice on the rear fender, BUT... the threaded insert will only accept the allen screw that comes with the kit, it WILL NOT ACCEPT factory threaded seat screws or aftermarket seat bolts that thread into the fender. The threads are finer on the kit allen screw. Also the screw that comes with the kit rounds off easily. BE CAREFUL!
I bought one of these many years ago, it was an easy install and has been working great. Much sturdier than the original junk which has plastic. I remove and install the rear pillion all the time and had no issues with the original allen screw.