Sunrise make a range of hi powered ESC that are rugged and have extensive programming features. The company OEM's for other brands and has a good reputation for reliable speed controllers

• Model: ICE series HV-120A ESC
• Constant Current: 120A
• Max Current: 140A for 10 seconds
• Input Voltage: 4-14 cells li-XX or 12-42 Ni-MH/Ni-Cd battery
• BEC: none, OPTO
• BEC Output: none
• PWM: 8-16 KHz
• Max RPM: 240,000rpm for 2 Poles Brushless Motor
• PCB Size: 68mm*53mm
• Weight: 102g