EMAX ES9051 II Micro Digital Servo, 4.3g Ultra-Mini High Speed Servo for RC Models, Robot Arm, STEM Education & Raspberry Pi Projects (4 Pack)
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Availability:
Only 1 left in stock, order soon!
Arrives
Thursday, Mar 19
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Size: 4 Pcs
Features
- 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.
- 3Month HassleFree Warranty - Free replacement or refund for any quality issue within 3 months. Scan the QR code to contact us directly.
Product Dimensions: 0.78 x 0.33 x 0.91 inches
Item Weight: 2.46 ounces
Item model number: ES 9051
Manufacturer recommended age: 14 years and up
Manufacturer: EMAX
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Mar 19
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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
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
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
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.
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Reviewed in the United States on May 26, 2025 by Michael J. Myers
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.
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Reviewed in the United States on April 10, 2025 by Bigred912
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.
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Reviewed in the United States on January 25, 2025 by Brian
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.
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