You can scuff the plates if they aren't completely trashed, but as cheap as clutches are you would enjoy the freshness of a new one. And regardless of what most will say, yamaha oem clutches are one of thee best unless you can afford a set from Hinson. I currently am running a Barnett which is produced under White Brothers which means its made in Tawain and Im not very impressed at the one year mark with only about 40 hrs ride time. Also too make sure you have a manual from clymer or yamaha because there are some tiny marks on the plates that need to be aligned correctly and the manual has excellent installation instructons.