For sale are (2) JR 8311 Digital High Torque Heli servos. They are in mint condition and have been slightly used. They claim to be Nylon or plastic gears but these appear to be metal. Check out more specs at servo database or at JR.
Torque 4.8v 125oz. 6.0v 146oz.
Speed 4.8v 0.18sec. 6.0v 0.16sec.
New $109.00 each
$80.00 for the pair and includes FREE Priority shipping within the USA to the lower 48!!!