4s esc
 

what esc can I use with a 5.5 motor and 4s lipos

castle creations mamba max pro and also monster max

Typically your looking for an 1/8th ESC like the Tekin RX8 or LRPiX8 or the HW/Team Orion units.

are there any cheaper options

cheapest would prob be hobbywing 1/8 system or fusion other than that you could get 2nd hand

about 3 weeks after i got my first rx8 an sc4x 5.5 motor i came up with the bright idea of running it on a 3s, had read about some in the states doing the same with a 11t pinion, i only had a 13t, motor didnt last a full pack but it was dam fast, totally useless as it wheelied on touch. tekin didnt recommend below a 6.5 for 3s after speaking to them about my problem so id imagine a 5.5 on 4s is going to be stupid fast for half a pack before it brakes.

What are you wanting to run it in? if i was wanting to use 4s i would use a tekin t8 motor, a 2050 or a 1900 will be perfect for 4s

its going in my hpi e firestorm ran a speed passion 5.5 on 3s and it was fine