Ruistart
MG90D Digital Micro Servo (6061-T6 Aluminum Gear, Alloy Case)
MOQ 5 pcs · samples available
RCinPower · Motors & Servos
SKU RS-337 HTS 8806.99 Origin Shenzhen, CN Updated Oct 2026
Price on request
Wholesale pricing is quoted per order. Send the quantity and destination and the trade desk replies within six working hours, EXW Shenzhen.
The Supernova 1605 delivers substantially more thrust on a 3.5” Freestyle Prop than 16mm or 1804 size alternatives. It’s perfect for dynamic and exciting freestyle flying.

The Supernova 1605 is able to match or exceed the efficiency of alternative motors while delivering significantly more power and better responsiveness.

The Supernova 1605 provides a significant uplift in motor responsiveness which is vital for controlling propwash and providing smooth and stable footage.

The Supernova 1605 is the best performing 3.5” motor overall whilst being lighter than competition. This makes it the ideal choice for sub-250g builds.

What do you do when you’ve broken the world drone speed record with a motor capable of 580 kph? You bring that technology to 3.5” Freestyle drones of course!
If you are seeking the ultimate performance for your 3.5” freestyle build this is it. Built on the world-drone-speed-record-breaking technology of the AOS Supernova 3220, the AOS Supernova 1605 is engineered to deliver the Torque, Power and Performance you need precisely matched to a 3.5” tri-blade Freestyle prop. (3.5” cinewhoops with bullnose props should use larger 2004 size motors).
The motor is optimized for driving 3.5” Freestyle Tri-blade props on 4S battery voltage. On the thrust test stand and in the air, Chris Rosser found the Supernova 1605 drastically outperforms other 3.5” motor options (1404, 1804), producing massively more thrust and a much faster response without sacrificing efficiency. The Supernova 1605 broaches no compromises, 3.5” Freestyle has never had a powerplant like this.
Built on the incredible success of the AOS Supernova 2207, 2807, and 3220 the 1605 takes the same revolutionary design philosophy and scales it down for the challenging demands of 3.5” freestyle pilots. Thanks to thousands of finite element simulations including 4D field modelling for the first time, the Supernova 1605 delivers an exhilarating combination of control, power, and efficiency, all in service of the ultimate in-flight performance.
Exceptional designs require exceptional execution. That’s why the AOS Supernova 1605 is manufactured by RCinPower, a brand synonymous with race-winning and record-breaking motors. This partnership, coupled with AOS’s cutting-edge design approach, ensures that this motor not only meets but exceeds the expectations of the most demanding pilots. With the Supernova 1605, you can experience 3.5” Freestyle the way the FPV Gods intended.
For smooth, precise low-throttle control and breathtaking top-end power, AOS recommends applying throttle expo in Betaflight. Start with Throttle MID = 0 and Throttle EXPO = 0.20, adjusting EXPO to fine-tune your desired throttle response. Increase EXPO for greater precision at low throttle or reduce it for a sharper, more aggressive feel.

Specifications:

| Brand | RCinPower |
|---|---|
| Department | Motors & Servos |
| Kv rating | 3900 KV |
| Minimum order | 10 pcs (samples available) |
| Lead time | Ships in 24-48h from stock |
| Packaging | Qty per carton | Carton (cm) | Gross weight | CBM |
|---|---|---|---|---|
| Retail box | 1 | 18 × 12 × 6 | 0.42 kg | 0.0013 |
| Inner carton | 18 | 38 × 26 × 22 | 4.6 kg | 0.0217 |
| Export carton | 128 | 58 × 42 × 38 | 21.4 kg | 0.0926 |
Placeholder packing data — confirm with your supplier before quoting freight. CBM is per export carton.
Stock supply starts at 10 pc. The 10× and 50× quantity breaks are already applied in the price table above.
Not on this specific SKU. For RCinPower AOS Supernova 1605 3900KV Motors we supply as-is, but if you need a private-label version we will usually find an equivalent part in the same family that can be branded — send us the requirement.
Air express (DHL / FedEx / UPS) is typically 4-7 working days door to door. Larger orders can move by sea or rail with DDP terms so the landed cost is fixed before dispatch.
Every unit is bench-tested and inspected before packing, and we can supply CE / FCC / RoHS documentation and a QC report with the shipment.
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Send us your parts list — we return a landed-cost quote with tier pricing, lead time and shipping options. No sign-up needed, just an email address to reply to.
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