Castle Creations motor and ESC combo recommendations for the Traxxas Jato 4x4

Sidewinder 4 w/1410-3800kv - 14T pinion / 54T spur on 2s = ~35MPH
Copperhead 10 w/1412-3200kv - 13T pinion / 54T spur on 3s = ~40MPH
Mamba X w/1412-3200kv - 14T pinion / 52T spur on 3s = ~45MPH
Cobra 10 w/1415-2400kv - 18T pinion / 47T spur on 4s = ~50MPH

All speed estimates are with stock tire diameter, high quality batteries and appropriately sized battery connectors.
Always monitor ESC, motor and battery temperatures on new setups or when changing gearing or batteries.