Took a few years away from the hobby but decided to splurge and pick up an xmaxx. So far I love this thing. Itís an amazing piece of machinery. I figure Iíll leave this one stock til I start breaking things or get comfortable enough to need hop ups. Anyways after my first two batteries I did an inspection and I noticed two very thin metal rings that were hanging around the rear driveshafts loose and beat up.

What are these and should i be worried or need repair already? I literally just ran it around some bumpy grass lol. I didnít see this part in the exploded view but I may have missed it in my haste.