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X20-4208 Brushless Contactless 6BB HLS Standard Servo 46Kgf.cm 0.07sec for 1:7 & 1:8 Scale On-road or Off-road RC Race Cars, Aerobatic Airplanes and Jets
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X20-4208 Brushless Contactless 6BB HLS Standard Servo 46Kgf.cm 0.07sec for 1:7 & 1:8 Scale On-road or Off-road RC Race Cars, Aerobatic Airplanes and Jets is a KST Servos product selected for Aircraft Servos, Car Servos. This page is written for practical buying decisions, with the key fit, size, voltage and performance details organized in one place.
Use it to compare torque, speed, voltage range, construction, dimensions, weight, variants and accessory compatibility before choosing the right component for an RC aircraft, helicopter, car, glider, UAV or workshop installation.
Key Advantages
- 4 Pole Brushless DC Motor, with fast response and high efficiency
- Extreme torque & Excellent speed
- Hardened steel gear & CNC aluminum case
- 6 Ball Bearings
- IP65 splash-proof
- Working Frequency is up to 1520us/333Hz
Core Specifications
- Voltage Range: DC6.0V-8.4V
- Rated Voltage: DC7.4V
- Motor Type: 4 Pole Brushless DC Motor
- Gear Set Material: Hardened Steel/ HLS
- Ball Bearing: 6BB
- Case Dimensions: 40mm*20mm*40mm±0.2mm
- Weight: 80g±10%
- Designed for 1: 7 & 1:8 scale on-road or off-road RC Race cars (racing, buggy, truggy). Also suitable for high performance aerobatic airplanes, jets, scale models and more.
- Item: X20-4208 Brushless Servo
- Torque: 38Kgf.cm@6.0V, 42Kgf.cm@7.4V, 46Kgf.cm@8.4V
- Speed: 0.10sec/60°@6.0V, 0.08sec/60°@7.4V, 0.07sec/60°@8.4V
- Stalling Current: 8.80A@6.0V, 10.8A@7.4V, 12.3A@8.4V
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Servo selection: torque, speed, gears and voltage
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How to balance an RC aircraft and find the correct CG
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Mandatory pre-flight checks for safer RC flying
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
How to perform the first test flight of an RC aircraft
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| Technical Specifications | |
| Manufacturer | KST Servos |
| Brand | KST |
| Product Code | BR0023.0215 |
| All Variant SKUs | BR0023.0215 |
| Rated Voltage | DC7.4V |
| Voltage Range | DC6.0V-8.4V |
| Working Frequency | 1520us/333Hz |
| Default Travel Angle | ±100° =200° Total |
| Soft Start | Programmable |
| Programmable | Yes |
| Case Material | Aluminum Alloy |
| Motor Type | 4 Pole Brushless DC Motor |
| Gear Set Material | Hardened Steel/ HLS |
| Position Sensor | Contactless |
| Ball Bearing | 6BB |
| Case Dimensions | 40mm*20mm*40mm±0.2mm |
| Weight | 80g±10% |
| KST Collections | Aircraft Servos, Car Servos, Industrial, Standard Servos, X Series, X20 Series |
| Series | X Series, X20 Series |
| Size Class | Standard Servos |
| Application | Aircraft Servos, Car Servos |
| Features | 4 Pole Brushless DC Motor, with fast response and high efficiency; Extreme torque & Excellent speed; Hardened steel gear & CNC aluminum case; 6 Ball Bearings; IP65 splash-proof; Working Frequency is up to 1520us/333Hz; Programing box/USB link compatible; *Ple... |
| Item | X20-4208 Brushless Servo |
| Torque | 38Kgf.cm@6.0V, 42Kgf.cm@7.4V, 46Kgf.cm@8.4V |
| Speed | 0.10sec/60°@6.0V, 0.08sec/60°@7.4V, 0.07sec/60°@8.4V |
| Product Type | KST |
| Waterproof | IP65 |
| Stalling Current | 8.80A@6.0V, 10.8A@7.4V, 12.3A@8.4V |
| Total Temperature Range | -20℃……+65℃ |
| Designed for 1 | 7 & 1:8 scale on-road or off-road RC Race cars (racing, buggy, truggy). Also suitable for high performance aerobatic airplanes, jets, scale models and more. |
Tags: KST Servos, BR0023.0215, Aircraft Servos, Car Servos, Industrial & UAV Servos, Standard Servos, X Series, X20 Series, RC servo