Spektrum S9120BL

Search Amazon Search eBay

Compatible Hardware

Amazon eBay

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-09

Identity
Brand
Product Number	SPMSS9120BL
Category	Hobby
Performance
Torque	8.4V 1,453.50 oz-in 7.4V 1,209.00 oz-in 6.0V 1,173.00 oz-in Above Average
Speed	8.4V 0.21 sec/60° 7.4V 0.23 sec/60° 6.0V 0.29 sec/60° Bottom 10%
Physical
Weight	6.30 ozTop 10%
Dimensions	L 2.47 in W 1.18 in H 1.84 in
Drivetrain
Motor Type	Brushless
Gears	Steel
Gear Spline/Teeth	15 T
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Control System	PWM
Electrical & Environment
Operating Voltage	6–8.4 V
Connectivity
Connector	JR (Universal) estimate
Wire Length	152 mm

Submit Missing Data Report an Error

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 66% of 54 Custom servos at 6.0V
Speed	Bottom 10% Faster than 6% of 64 Custom servos at 6.0V
Weight	Top 10% Lighter than 100% of 31 Digital Custom servos

Performance Analysis

Shaft Power	7.48–12.80 W
Power Density	2.386 W/in³ More power-dense than 68% of 78 Spektrum servos
Torque Density	6.5678 oz-in/g 2nd-highest torque density of 41 Spektrum servos
Torque-to-Volume Ratio	218.73 oz-in/in³ 3rd-highest torque-to-volume ratio of 44 Spektrum servos
Speed-to-Weight	0.01931 (1/sec·g) Faster than 0% of 37 Spektrum servos
Speed-Torque Trade-off	340.16 1st-highest speed-torque trade-off of 41 Spektrum servos
Torque Gain per Volt	9.96%/V More voltage-responsive (torque) than 3% of 34 Spektrum servos
Speed Gain per Volt	15.87%/V More voltage-responsive (speed) than 43% of 29 Spektrum servos
Voltage Range Width	2.4 V Wider voltage range than 47% of 31 Digital Custom servos