KO Propo PS-703 FET Servo

Specifications

Source: Most data comes from the manufacturer but some data is sourced from our loyal community.

Last Updated:	2025-08-11
Modulation:	Analog
Torque:	7.2V: 73.60 oz-in (5.30 kg-cm)
Speed:	7.2V: 0.10 sec/60°
Weight:	1.69 oz (48.0 g)
Dimensions:	Length:1.61 in (40.9 mm) Width:0.83 in (21.1 mm) Height:1.38 in (35.1 mm)
Motor Type:	(add)
Gear Type:	(add)
Rotation/Support:	(add)
Rotational Range:	(add)
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	(add)

*We may earn a commission from your purchase.

The discontinued KO Propo PS-703 FET is a powerful, high-torque analog servo from the renowned PS line, backed by the potency of a Field-Effect Transistor (FET) amplifier. This servo is engineered for demanding applications where strength and holding power are the top priorities. The PS-703 is an outstanding choice for the steering on a 1/10 scale monster truck or the flight controls on a large .60 size aerobatic or scale airplane. The FET amplifier allows it to deliver its massive torque with an immediacy and authority that gives the driver or pilot a feeling of absolute control.
The identity of the PS-703 FET is its raw, unyielding power, delivered with the quality and reliability of the KO Propo brand. It has the strength to hold the wheels of a truck perfectly straight through a long, rutted corner and the power to move large control surfaces against significant aerodynamic force. It is a servo that is trusted by hobbyists who need the ultimate in reliable analog strength.
In heavy-duty robotics, the KO Propo PS-703 FET is a formidable actuator. Its massive torque and robust electronics make it ideal for the primary lifting joints of a large robotic arm, a powerful clamping mechanism, or for the leg joints of a very large, heavy walking robot. It is an actuator for mission-critical applications where both extreme power and high reliability are required.