The Tekin RX8 with a 2050 will run 4s nicely. Tekin has a wide range of KV motors in the T8 class.
In my racetruck I run a Tekin RX8V2 and a 1350 in my High Voltage Lightning SuperMaxx
In a truck I call 'The Beast' there's a RX8 and a Castle 1717. This thing is off the chain fast.
In the truck we call 'stocker' (because it uses stock Maxx like bulkheads) I'm running the Castle 1520 and this thing is stupid fast too.
These all run 6s.
My racing friend Eric runs 4s on the above Tekin RX8V2 and the T8 2050. He's faster on the racetrack than I am, but he's a much better driver.
