Traxxas Différentiel Complet Arrière XMaxx 8S Pro-Built 7881

Perfect fit

I wasn't sure if this diff came with fluid in it. It does. I got a pretty quick response from the seller when I asked. I had already bought it and would have cracked it open when I got it anyway.Since I knew there was fluid in it, I didn't open it. I probably should have. The screws holding the ring gear on weren't especially tight. I tightened all 4 3/4 to 1 full turn.The rear diff in my xmaxx was pretty worn when I pulled it to check bearings and gear lash. I bought it used, so I didn't know how much time was on it. I didn't have any broken gears, but oil was seaping out around the output shafts and the teeth on the ring/pinion were getting pretty sharp points on them. I replaced it before it failed on me and cut a bash day short. My front diff was still in good shape, so I haven't replaced that one yet.