The REC MX Seat Nuts are designed to be an OEM replacement and use the OEM bolts. Chances are if you have a Kawasaki you already have stripped out the threads on the OEM nuts as they are just too soft. The REC Seat Nuts take a little work to fit/press into the rear fender, but once inside the chances of you stripping out or losing them like the stock nuts are slim. The nuts are $29.95 a pair (kind of expensive), but have eased our mind about possibly losing a seat on the track. No one wants to ride back on the track to find their seat and take that ride of shame through the pits. Grab your balls and get some seat nuts! You can go to RECMX.com and check them out.