Xpert RC RP-4401-HV

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Product Number	RP-4401-HV
Category	Hobby
Performance
Torque	8.4V 252.06 oz-in 7.4V 222.08 oz-in 6.6V 198.07 oz-in 6.0V 180.16 oz-in Above Average
Speed	8.4V 0.05 sec/60° 7.4V 0.06 sec/60° 6.6V 0.06 sec/60° 6.0V 0.07 sec/60° Above Average
Physical
Dimensions	L 1.606 in W 0.795 in H 1.055 in
Case Material	Aluminum / Plastic
Drivetrain
Motor Type	Brushless
Gears	Metal
Control & Signal
Neutral Position	1520 µs
Refresh Rate	333 Hz
Control System	PWM
Electrical & Environment
Operating Voltage	6–8.4 V
Connectivity
Connector	JR (Universal)
Origin
Country of Origin	USA

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Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Above Average Stronger than 75% of 177 Low Profile servos at 6.0V
Speed	Above Average Faster than 84% of 175 Low Profile servos at 6.0V

Performance Analysis

Shaft Power	4.76–9.51 W
Power Density	7.061 W/in³ 2nd-highest power density of 32 Xpert RC servos
Torque-to-Volume Ratio	133.75 oz-in/in³ Denser torque than 65% of 27 Xpert RC servos
Speed-Torque Trade-off	12.61 Better balanced than 54% of 27 Xpert RC servos
Torque Gain per Volt	16.63%/V More voltage-responsive (torque) than 15% of 27 Xpert RC servos
Speed Gain per Volt	17.86%/V More voltage-responsive (speed) than 65% of 27 Xpert RC servos
Voltage Range Width	2.4 V Wider voltage range than 58% of 32 Xpert RC servos