eBay, search for kyosho rc motorcycle. I used to have a couple back in my younger years. Oil filled shocks, belt drive, I was into the electrics which held the battery where Erik puts his mufflers. The battery actually shifted side to side to make the bike lean into the corners. It was an awesome, but expensive hobby. The guys running gas bikes pay about a grand just for the basic bike. Upgrades can cost as much as it does for our streetbikes! :-)
I didnt have any stator problems with both of mine . However, I did break my share of slipper sprockets from a few crashes. extra parts to have is sprockets the tiny chain and front fork assy's (you will use them in time)
I also did cars and raced in a league for a while till it got crazy expensive with all the brushless and lipo with the new fancy controllers. Mine are all FM JR. I refuse to upgrade, lol
since I own a couple of these I can say by the video these guys have done a lot of track days.
my bikes are Kyosho and all my autos are Associated brand tc4 cars and t4 trucks.
In the video, I love how the baby blue colored one lowsides, saves it, lowsides again and saves it again. It's like there's a micro-Mamola in the saddle!