New esc???

[jnev]

The Mamba Max ESC would do fine for you. Disable the internal BEC and you're set to go.

Do you know what the KV is of the XLT-1 motor?

[lincpimp]

The xlt 1 is a 6xl feigao, me thinks! Will be a handful on 4s, but the MM should be able to handle it. You will want to run the timing on the lowest setting and the punch control at 50% or lower. The quark is an excellent esc but it does get hot, case design is not the best. The novak system will not produce enough power.