Bearing aren't an exciting upgrade but a necessary one. I usually pull off my linkage and grease it every six months or so. (I average riding 5 hours a week .) But, this time when I pulled off my linkage the bearings were in pretty bad shape. I had never replaced the bearings before and I figured if the linkage bearings were shot the swingarm bearings were also. I was right. So, I ordered up this kit and it contained all the pieces I needed. I had access to a hydraulic press and that made the job quite easy. Just take your time when you are pushing out the old bearings. And, I recommend putting the new bearings in the freezer for about 15 minutes before you try to install them. It makes the job much easier.