check these out...I used one for a while, before I lost it at the last dragrace.
Towerhobbies sells them.
LINK
I solder one up yesterday using 13AWG Dean wires
6 KiloWatt A123 Racer
GTP-Pletty Big Maxximum+RX8. GTP-C50-6L Hacker+RX8. CRT.5-Pro4+ZTW esc.
24s2p EVG SX 49.6mph Ebike.
18s4p Raptor 60mph Ebike. 11.5KW