See: Hitec
Hitec have announced that the HS-7950TH and HS-7955TG servos are back by popular demand and at a discounted price. Featuring the high resolution “G2” second generation programmable digital circuit and indestructible titanium gears, each of these powerhouse servos provide great performance and durability. The HS-7950TH offers up to 35kg-cm of torque at 7.4 volts while the HS-7955TG pulls up to 38kg-cm of torque at 6.0 volts.