DC motors are typically voltage limited (compared to other types) but with the right brushes can go as high as 200 V. They have been described as being like a mechanical transformer and will try to convert every amp and volt thrown at them into rotational motion - even if they blow up in the process. With a Z2k controller at 2000 A a WarP 9 with Helwig red top brushes can make 2000 X 200 = 400,000 watts (400 KW) for short bursts, like in drag racing. This would probably be around 400 HP after accounting for inefficiencies at those levels. Nobody makes a commercially available controller with more output that I know about.
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