I replaced the stock plastic adapter with this aluminum version on both my trucks. I really think it is a "must have", I came close to melting the plastic version due to a bearing seizing up, which would have caused even more bulk head damage if it wasn't caught. Gave it 4 stars only because it comes with a replacement "traxxas" bearing, I use aftermarket bearings which I think are more reliable. This kit is a good quick fix.