See: Power HD

Power HD have introduced the new B7 Revolution HV low-profile brushless servo. The High Voltage (6V-8.4V) B7 Revolution servo pulls up to 13kg-cm of torque at a speed of down to 0.055s at 7.4V input. The B7 Revolution servo comes with a short, black color 80mm wire, a steel gear set and weighs only 47g. The B7 Revolution was developed and improved by 1/10 Touring and EP Off-Road drivers.