Tekin RS will be more than fine for 2wd m8. It can run down to a 5t motor. My sons got an RS in his TRF201 running a 7.5t motor with no issues. They're really good especially with all the tuning options available through the hotwire. RS Pro has no motor limit and has 2 layers of fets to accommodate heat. Hope this was helpful to you.
Scotty....
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