Overview
The Hitec HS-645MG is one of the most legendary servos in the RC world — a high-torque metal-gear analog servo with dual ball bearings that has earned its reputation through decades of reliable performance. Combining 133 oz-in of torque, all-metal gears, and proven Hitec engineering, the HS-645MG remains a top choice for hobbyists who need ultra-torque performance from a standard-size analog servo.
From scale RC builds to 60-size aircraft to monster trucks, the HS-645MG has powered just about everything. It's the kind of servo you can install with confidence and forget about — exactly because it just works.
Key Features
- Ultra-torque metal gear servo
- Dual ball bearings for smooth output
- 133 oz-in torque at 6V
- 0.20 sec/60° transit at 6V
- Standard servo form factor
- Legendary Hitec reliability
Performance Benefits
- One of the strongest standard-size analog servos available
- Metal gears handle heavy steering and control loads
- Dual ball bearings for smooth, consistent output
- Decades-proven reliability across millions of installs
Usage Notes
Best Used With RC Scale(s): The HS-645MG fits a wide range of applications, from 1/10 and 1/8 scale RC ground vehicles to 60-size sport aircraft, scale RC builds, and high-load control-surface applications. It's particularly popular for monster trucks, buggies, and as a steering or throttle upgrade across many RC platforms.
- 1/10 and 1/8 scale RC cars, trucks, and buggies
- Sport and 60-size RC aircraft
- Scale RC builds and warbirds
- High-torque steering and throttle applications
Technical Specs
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Type: Ultra-Torque Metal-Gear Analog Servo
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Operating Voltage: 4.8V - 6.0V
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Speed: 0.20 sec/60° @ 6V
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Torque: 133 oz @ 6V
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Gear Train: All-metal
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Bearings: Dual ball bearings
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Form Factor: Standard
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Part Number: 32645S
What's Included
- (1) Hitec HS-645MG Ultra Torque Metal-Gear Servo
Summary
The Hitec HS-645MG is a true classic — and still one of the strongest standard-size analog servos you can buy. Ultra-torque output, all-metal gears, dual ball bearings, and decades of proven reliability make it the obvious pick when you need a no-nonsense workhorse.
