what do you guys think of the Castle Creations 1/10 Mamba Max Pro SC System 2400 kV?

Mamba The a and the o are at separate ends of the keyboard.

I think that it is a good system. Castle things are typically very powerful and reliable. For racing though I would pick a different system, preferably something sensored.

Mumbai Max Pro is an ok combo. But it's not waterproof, BEC is weak. I would opt for WP-SC8. SCT Pro for racing.

I like the combo, many say the BEC is weak, i've never had a problem with it, i have also never run a super high end servo with it... I'd say if you stick to average servos you'll be fine

The Max pro is what I call a good ESC but by no means a great one. Most issues with brown outs can be fixed by just adding a glitch buster to keep the power from rippling with a high torque digital servo.

The 2400 KV 550 is just something I do not see many people run though, it is not raging with popularity. You might want a good 2 pole 550 like the ballistic or a tekin in the 4.5 or 5.5 turn range instead.

Not sure how friendly some of the newer 4 pole 550 motors like the Tekin Pro4 HD line be with the max pro, but I suspect geared right they would be OK as well.

What will you be dropping this in?

I ran the MMP/2400 Combo in an SC10 4x4 and although I had to run a 18t 32p pinion to keep up with others, it ran well and stayed at or under 140 degrees. It is nice on 2S, better on 3S, a beast on 4S, and insane on 5S.