Rear diff swap and spur gear upgrade for the MJX Hypergo H16BM

Here we do a swap of the torn up rear diff that I had going on in my Hypergo. I ran into some trouble realizing the spur gear is not compatible with the upgraded differential. Here I show you everything you need to complete the upgrade/repair. #RC #Fun #Hobby #Repair #MJX #Hypergo #Custom #Upgrade