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EMAX ES9051 Micro Digital Servo 4.3g, High Speed for RC & STEM (4 Pcs)

Based on 137 reviews
Condition: New
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$34.99

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Availability: In Stock.
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Arrives Dec 2 – Dec 16
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At a glance

Condition
New
Size
4 Pcs
Model
ES 9051
Dimensions
0.78 x 0.33 x 0.91 in
Color
Black
Age Range Description
14 years and above
Operation Mode
Automatic

Features 5

  • Genuine EMAX Quality - Authentic EMAX ES9051 II micro digital servo. No counterfeit, no compromise. Stable performance and reliable control you can trust.
  • Fast Digital Response - Speed: 0.090.01 sec/60 (4.8V) | Torque: 0.8 kgfcm | 180 rotation. Instant, accurate positioning for smooth motion.
  • UltraLight & Compact - Dimensions: 19.78.323.2 mm | Weight: only 4.8 g. Perfect for weightsensitive RC planes, micro robots, and compact STEM builds.
  • Wide Application - Ideal for RC cars, boats, airplane, robot arms. Essential for STEM, Arduino, and Raspberry Pi projects.

Description

100% Genuine EMAX ES9051 II – 4.3g Digital Servo Faster, lighter, and more compact—optimized for RC models, robot arms, and STEM projects. Features digital precision and lightweight plastic gears for swift, agile response in tight spaces. Specifications: Voltage: 3.6V –6.0V Torque: 0.85 kg·cm max (4.8V) / 1.0 kg·cm max (6.0V) Speed: 0.07 sec/60°(4.8V) / 0.06 sec/60° (6.0V) Travel Angle: 180°(500–2500 µs) / 90° (1000–2000 µs) Weight: 4.8 g | Wire Length: 18 cm Dimensions: 19.7 ×8.3 × 23.2 mm Gear Material: High-strength plastic Plug: Universal Futaba / JR Package Includes: 1 × ES9051 II Digital Servo 4 × Horns & Screws Set HAWK’S WORK is an expert in RC flying. We provide the coolest and most interesting RC products and parts to users all over the world. About Us We love flying, especially flying toys that are interesting and creative for all ages and all levels. We design, make and supply the coolest RC aircrafts. We offer a friendly, approachable and best in class service. Join us to feel the excitement and fun of flying.

Specs 15

Brand Name HAWK'S WORK
Age Range Description 14 years and above
Number of Packs 4
Set Name EMAX ES9051 II Micro Digital Servo 4-Pack
Manufacturer EMAX
Item Highlight 4.3g ultra-micro digital servo, 0.07s/60° speed, 0.85kg·cm torque 4.8V, for RC plane/car/boat/robot & STEM/RPi projects
Model Number ES 9051
Manufacturer Part Number ES 9051

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 2 – Dec 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


Great little servos, perfect for small rc planes
I use a pair of these servos on a dream flight Alula. I’ve been pretty rough on them and they’ve held up really well so far! Always have been a fan of Emax servos and these have been great as usual!
Reviewed in the United States on March 3, 2026 by J B

Small Tiny Servo
Its as described and price well for a 2 pack. They are not the strongest micro servos out there, but they get the job done for say a medium load project. Currently used them to replace a burnt out servo on a mini rc plane. So far working well with no issues.
Reviewed in the United States on May 1, 2025 by Michael

Happy to operate on a single LiPo cell
Size: 4 Pcs
These are light and useful in small RC models. One of their singular traits is that they seem to be happy to operate on 3.7 volts or less--a single lipo cell. I think most small servos need at least 4 volts and are "unhappy" less. I use them on models where l don't want the weight or extra voltage of either a 2S Lipo pack or a 4 cell NiMh receiver pack. These will run just fine on a single cell "gumstick" style LiPo battery. ... show more
Reviewed in the United States on May 26, 2025 by Michael J. Myers

nice deal on micro servos
Size: 4 Pcs
fast shipping on a nice rc product. Just what I needed for a rc glider! Great li
Reviewed in the United States on November 28, 2025 by Randal Palmer

Compact and Precise Micro Servo
Size: 1 Pcs
Got this micro digital servo for a small robotic arm project I'm tinkering with. The size is genuinely compact, which is exactly what I needed for the limited space. The coreless motor operates smoothly and seems to offer good precision in movement. It responded accurately to the signals I was sending from the microcontroller. For its small size, it appears to have decent torque for light-duty applications. It feels reasonably well-built. If you're working on small-scale robotics or RC projects where space and precise movement are key, this servo looks like a viable option. ... show more
Reviewed in the United States on April 10, 2025 by Bigred912

Wouldn't put a heavy load on them
These servos work as expected for small RC projects. They aren’t the strongest, but they are responsive and smooth. If you need something with more torque, you might need a bigger model
Reviewed in the United States on March 1, 2025 by Steve H.

Plastic gear servo that is great for light duty applications
Size: 1 Pcs
I recently had the opportunity to use this 4.8G Servo, in a project involving a small robot vehicle for my Raspberry Pi experiments. The servo's compact size and light weight (4.8g) were perfect for my needs, fitting neatly into limited spaces without adding significant weight. Performance-wise, the servo operated reliably which was more than adequate for the precision movements required in my project. The servo performed consistently over several hours of operation without any noticeable lag or jitter. However, one aspect to consider is that the plastic gears will not withstand very high-stress applications and the lifetime will not match that of metal gears. Bottom Line: This servo is a solid choice for hobbyists or anyone looking for a reliable micro servo for light-duty applications or in STEM or Raspberry Pi projects. Users should be mindful of its limitations with plastic gears for more intense use cases or when durability is a factor. For the right application it is a great servo and I recommend it. ... show more
Reviewed in the United States on January 25, 2025 by Brian

okay reseller for these 4.8g servos
These emax 4.8g servos being sold by hawks work are as their spec sheet describes. Don't expect crazy torque out of them, but they are light and work great in rc airplanes that are designed to use this size of servo.
Reviewed in the United States on April 11, 2025 by T
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