Just out of curiosity, why 4000KV? Seems high to me unless you intend on running 2s. I had that combo in my LCG Slash 4x4 and it's too hot IMO. Replaced the motor with a cheapo 2800KV motor off Aliexpress and it's a better match, at least on 3s. I drive strictly on loose dirt/sand so mo powa =...
It's not Hobbywing, it's Ace Power... Yes, it's manufactured by HW but so are half or more of all hobby-grade ESC's. Most of them not supporting all the features of HW-branded ones. And the OEM ones are usually ancient designs.
I see genuine HW combos being 20-30 percent more expensive than the...