KST SV905-12 HV Brushless Metal Gear 17Kgf.cm 0.04sec Tail Servo for 550-700 Class RC Helicopters
In stock
Usually ships within 24 hours
Regular price
$99.00
Couldn't load pickup availability
Product details
- Vendor Unmanned RC
Do you have questions about this product?
Presenting the outstanding value SV905-12 HV brushless tail servo, crafted specifically for enthusiasts of 550-700 class RC helicopters who demand top-tier performance and unwavering reliability. The SV905-12 HV tail servos excel in power delivery, driving an impressive 17Kgf.cm of torque at 13V while maintaining an exceptional 0.04-second speed for lightning-fast responsiveness.
Engineered with an emphasis on 12V LiPo Battery Direct Drive, these servos guarantee steadfast stability and dependable performance under any circumstances. Featuring dual ball bearings, our servos establish a rock-solid gear-train, ensuring seamless and pinpoint-accurate operation.
This high-voltage servo is set to leave a lasting impression, elevating your experience with unprecedented levels of power and precision.

Features
- DC 12V Rated Voltage
- Support 8-13V High Voltage or 2-3S LiPo Battery Direct Drive
- High Frequency & Fast Response
- Ultra High Torque & Excellent Speed
- Dual Ball Bearings
- Brushless DC Motor
- Hardened Steel Gear
- CNC Aluminium Case
- Programmable (Please refer to the programming tool manual for correct voltage)
- Ideal for 550-700 Class RC Helicopters Tail
Specification
- Item: SV905-12 Tail Servo
- Rated Voltage: DC12V
- Voltage Range: DC8.0V-13V
- Torque: 13Kgf.cm@8.4V / 16Kgf.cm@12V / 17Kgf.cm@13V
- Speed: 0.06sec/60°@8.4V / 0.045sec/60°@12V / 0.040sec/60°@13V
- Working Frequency: 760μs/560Hz
- Temperature Range: -10℃.......+65℃
- Programmable: Yes (Please refer to the Programming tool manual for correct voltage)
- Case Material: Aluminium Alloy
- Motor Type: Brushless DC Motor
- Gear Set Material: Hardened Steel
- Position Sensor: Potentiometer
- Case Dimensions: 40.5mm*20mm*38mm±0.2mm
- Weight: 70g±10%
- Ball Bearing: 2BB


We appreciate your business and are committed to providing you with exceptional service and timely delivery. Please review the shipping information below for your order.
Order Processing Time:
Orders are usually processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days.
Shipping Methods:
Standard Shipping (3-7 business days)
Expedited Shipping (2-3 business days)
Express Shipping (1-2 business days)
Packaging:
Rest assured that all items will be securely and safely packaged to prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.
Shipping Rates:
Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.
Order Tracking:
Once your order has been shipped, you will receive an email with the tracking number and carrier information. You can also track your order status by logging into your account.
International Shipping:
We ship worldwide! Please note that international shipping rates and delivery times may vary based on destination. Customers are responsible for any customs fees, import taxes, or additional charges that may apply.