Tekin T-440 Digital Hi-Torque Programmable Servo (High Voltage)

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Tekin T-440 Digital Hi-Torque Programmable Servo (High Voltage)
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Hit the trails hard with the Tekin T-440 Crawler Servo. Rocks, Mud, Dirt or Snow. The Element Proof Design means you can tackle any terrain. Full Metal Gear set, All Aluminum Housing, Digital Position Encoding and loads of Torque, this servo keeps you out of a bind. Fine-tune your setup with an extensive set of adjustments via Tekin’s HotWire PC Interface.

The Difference is in the Design
Tekin servos are crafted from the highest quality materials available. CNC Precision Cut gears provide an extremely smooth and efficient drive train. 6061-T6 machined aluminum 3-piece o-ring housings provide strength and protection from the elements while the finish quality and design are second to none. Sleek chamfered edges and bold lines combined with a matte anodized finish are sure to accent any build.

Included with the T-440 Servo is a machined aluminum 20mm Crowbar 25T dual clamping servo arm.

Advanced Technology:

  • Digital Magnetic Position Encoder (DPE): Our servos use Digital Magnetic Position Encoding (DPE) rather than a standard potentiometer, which gives Tekin servos industry leading accuracy, linearity and consistency.
  • Accuracy: Precise linear movement through the entire motion range with less than .2 degrees of deviation from start point to end point make Tekin the superior performance product.  Low deviation DPE technology translates to pinpoint accuracy not found in other potentiometer servos, which tend to wander and center poorly and get worse as they age. Tekin is built to last at peak performance.
  • Linearity: Potentiometer servos can be up to seven degrees non-linear from end point to end point, creating a disconnected feel from your transmitter. Tekin servos eliminate this disconnect, giving you a linear feel and more precise control over your servo movement and position.
  • Consistency: Performance is important but we are all about consistent performance. Potentiometer performance drifts due to many variables; heat, age, component quality, etc. DPE is a rock-solid, repeatable and consistent technology bringing an unmatched consistency to Tekin servos. Tired of constantly trimming your servo and having response feel different during times of longer usage? Tekin servos are the answer.
  • Efficiency: Accuracy drives efficiency. A servo that has to work less to center or stop without overshooting position is using less energy. This means less heat build-up, less component fatigue and longer life.
  • Adaptability: Tekin Servos come with a series of unique features; DPE technology lets you set the center point anywhere, and servo travel limits can be set without reducing the End Point Adjustments (EPA’s) on your transmitter.  Most servos are limited to 90° travel in each direction with a physical stop point; DPE means that Tekin servos can be programmed to travel beyond 360°-- up to 5 full rotations in each direction!
  • Element Proof: Dependable, no matter the terrain. Element Proof Tekin products are designed to handle water, mud & snow within reasonable restrictions. While we are not afraid to take on the elements, submerging is not recommended.


  • Digital Magnetic Position Encoder (DPE)
  • Specifically Designed for 1/8 and 1/10 Scale Applications
  • Included Aluminum Vector Servo Arm
  • ?Full Aluminum Servo Housing
  • ?Element Proof Design*
  • ?Precision Cut Full Metal Gears
  • ?ABEC5 Ball Bearings
  • ?High Voltage Capable
  • ?High Torque Coreless Motor
  • ?25T Output Spline
  • ?Programmable via HotWire PC Interface
  • ?Overload Protection Technology
  • ?Thermal Protection Circuitry
  • ?Low Voltage Alarm**
  • ?Quiet, Efficient, Cool Operation
  • ?HDAC: High Density Copper PCB's
    *Tekin Element Proof products are designed to withstand water, snow and mud. Not intended for operation while submerged in liquid.
    **requires HotWire sold separately

HotWire Programmable Features:

  • Feel - Mild to Aggressive
  • ?Speed Limit
  • ?Torque (0-100%)
  • ?Torque Delay
  • ?Direction - Normal / Reverse
  • ?Center Point
  • ?Travel
  • ?Soft Starting Speed & Torque
  • ?Max Temp Alarm
  • ?Low Voltage Alarm
  • ?Over Voltage Alarm
  • ?Bind Relief
  • ?Fail Safe Speed and Position
  • ?Set Custom Servo Name
Size Category
: Standard
Type: Digital
Application: Rock Crawling and Rock Racing
Torque: 502 oz-in (36.2kg-cm) @ 8.4V; 460 oz-in (33.1kg-cm) @ 7.4V; 421 oz-in (30.3kg-cm) @ 6.0V
Speed: 0.11sec/60 deg @ 8.4V; 0.13sec/60 deg @ 7.4V; 0.15sec/60 deg @ 6.0V
Length: 1.57 in (40mm)
Width: 0.79 in (20mm)
Height: 1.57 in (40mm)
Weight: 2.57 oz (73g)
Bushing Or Bearing: Bearing
Motor Type: Coreless
Gear Type: Metal
Voltage: 4.8V to 8.4V

Tekin Quality Promise
We guarantee our servos to be free from manufacturer defects for 365 days from date of purchase. All items are tested in a controlled environment prior to the packaging process to ensure you receive a top quality Tekin product. We strive to provide the highest grade professional components possible and we appreciate and treat every Tekin user as part of our family. We are RC enthusiasts designing and manufacturing quality products to give our fellow RC enthusiasts the best hobby experience possible. 

This product was added to our catalog on March 1, 2018

Verified Owner
Friday, Feb 10 2023 (10 months ago)
Tekin T-440 Digital Hi-Torque Programmable Servo (High Voltage)
Excellent product when it works. Bought 4. 3 worked amazing and entirely as advertised.
1 has had issues oob from day 1. After about 20 e-mails to get Tekin to speak to us, Tekin support acknowledged the legitimate issue, then ghosted us.
Terrible customer service and support
Lane Riggs
Verified Owner
Friday, Sep 23 2022 (about a year ago)
Tekin T-440 Digital Hi-Torque Programmable Servo (High Voltage)
Very nice servos, I have them in Rc4wd tf2s and vanquish rigs! They are great for them all because there is so much adjustment in one servo!
Dylan Hamm
Verified Owner
Friday, Nov 13 2020 (about 3 years ago)
Tekin T-440 Digital Hi-Torque Programmable Servo (High Voltage)
Excellent Servos, digital calibration and home settings are fantastic. Run Quiet, and reliably
Verified Owner
Thursday, Jul 30 2020 (about 3 years ago)
Tekin T-440 Digital Hi-Torque Programmable Servo (High Voltage)
Great servo. Smooth and plenty of torque in my VS4-10 Pro, and VS4-10 Ultra.