running mine in an sc104x4. AWESOME & BEAUTIFUL esc! ran and tested with pro4 4K and LRP 4.5T X12-L. Works flawlessly and easy to use. Has USB bridge capabilities (which i've yet to acquire the hardware for). Easy to program with pre-set profiles that alter timing, current limiter etc. Super silky smooth, as LRP's known for! Love/hate the fully detachable leads(power, motor, rx leads). The pre-soldered bullets they come with aren't the greatest as they are already showing signs of wear/browning. Got it last monday as a looong awaited replacement for a smoked spx8. Thanks AE!