MG90S Servo 1/2/4/10/20/50 Pcs All Metal Gear 9g SG90 Upgraded Version Mini Servos for RC Helicopter Boat Car Arduino Project
AliExpress buyer rating : What this means
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- ✅ Metal gears provide significantly better durability and impa
- ✅ Compact 9g micro size allows for easy integration into small
- ✅ Higher stall torque compared to standard SG90 servos for imp
Enhance your RC vehicles and Arduino projects with these durable MG90S mini servos featuring sturdy metal gears. They are an ideal choice for makers and hobbyists who need reliable actuation in a compact size.
🛒 Buy now on AliExpress →Over 5 days of daily tracking (since 8 Oct) the price ranged from $4.45 to $4.48. Today: $4.47.
- ⚠️ Higher power consumption than plastic gear servos may require a more r
- ⚠️ Metal gears can produce more mechanical noise and have slightly more p
What AliExpress buyers say
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See reviews on AliExpress →🔍 In-depth analysis
This analysis is written with an AI model from the product data (name, category, price, rating and orders), not from a hands-on test. How we choose and score
The MG90S is a ubiquitous component in the world of DIY electronics and remote-controlled hobbies. Positioned as an upgraded version of the standard SG90, its primary selling point is the inclusion of metal gears within a compact 9g frame. This modification is intended to provide greater durability and resistance to stripping compared to nylon-geared alternatives. With over eight thousand orders and a remarkably high buyer rating, this specific listing appears to be a go-to source for makers, educators, and RC enthusiasts who need reliable, small-scale actuation for their projects.
While the product is marketed for everything from helicopters to Arduino-based robotics, it is important to recognize its place as a hobby-grade component. The high volume of successful transactions suggests a level of manufacturing consistency that is often hit-or-miss in this category. Whether you are looking for a single replacement part or stocking up for a classroom project, the availability of multi-unit packs makes it a flexible option for various scales of assembly.
✅ Pros
- Exceptional buyer rating and high order volume indicate a very high level of customer satisfaction and reliability.
- Metal gear construction provides a significant durability upgrade over standard plastic-geared servos in the same size class.
- Versatile pack options allow for significant savings when purchasing in bulk for larger builds or inventory.
- Compact 9g form factor makes it compatible with a wide range of existing 3D-printed designs and RC kits.
Cons and cautions
- As a hobby-grade component, internal tolerances may vary slightly between units, which could affect extreme precision.
- The 'upgraded' designation is a general marketing term; specific performance metrics should be verified via the seller's documentation.
- Paid shipping to Israel: $2.43 (per the AliExpress shipping quote)
- 6 variants on one listing: price and spec change with the option you pick
Who it's for: This servo is ideal for hobbyists building small RC cars, boats, or planes, as well as STEM students and makers working on Arduino or Raspberry Pi robotics projects where space is limited but durability is required.
Who should skip it: It is not suitable for heavy-duty industrial applications, large-scale RC models requiring high torque, or professional projects where certified precision and detailed data sheets are mandatory requirements for safety or performance.
🔎 Check before you buy
- Confirm the exact stall torque and operating voltage range with the seller to ensure it matches your power supply.
- Verify the physical dimensions and the length of the connector wire to ensure it fits your specific housing.
- Ask the seller if the gears are 100% metal or a hybrid of metal and plastic components.
- Clarify whether the package includes the necessary mounting screws and various servo horn shapes.
💡 Tips
- Always test each servo using a dedicated tester or a simple sweep script immediately upon arrival to identify any rare manufacturing defects.
- To prolong the life of the motor, ensure your mechanical linkages move freely and do not cause the servo to stall at its travel limits.
Questions about this product
Is this servo digital or analog?
What is the maximum voltage these can handle?
Does it come with the mounting hardware?
❓ Questions & Answers
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