EcoPower 640T 13g Waterproof Metal Gear Digital Sub Micro Servo For TRX-4 & TRX4-M

Read Reviews
Write a Review
EcoPower 640T 13g Waterproof Metal Gear Digital Sub Micro Servo
Back Order Now
You may back order this item and it will ship when it arrives.
$3.99 flat rate shipping! Learn More
Price: $29.99

Please Log in to receive a notification when this item arrives in stock.

Save In List
Please be aware that pricing and product availability in-store may vary from what’s available online because each store is independently owned and operated.

The Ecopower 640T 13g Waterproof Metal Gear Digital Sub Micro Servo is an incredibly powerful sub micro option developed to provide a more rugged upgrade for the Traxxas TRX-4. Also, when paired with the Samix TRX-4M Brass Servo Mount (SAMTRX4M-4068 - Sold Separately), this makes a great upgrade for the Traxxas TRX-4M. But, this servo is a great upgrade for any sub micro servo application!

Delivering 64 oz-in of torque and .09 transit speed at 6.0V, the 640T will operate at a level that makes other sub micro servos feel inadequate in comparison. The servo features an all metal gear train for durability and waterproof circuitry that will stand up to the elements. So if you're tired of your small servos delivering small performance and want to try something with more muscle, step up to a 640T and shift performance into high gear.

SIZE NOTE: The 640T is not an exact physical copy of the 2065 and is a few millimeters taller, and may not work in all other applications where the 2065 is used. Please see the Compatibility tab for verified model compatibility.

TRX-4M NOTE: This servo is only compatible with the TRX-4M when using the optional Samix Brass Servo Mount (SAMTRX4M-4068 - Sold Separately).


  • Direct replacement for Traxxas 2065 sub micro servo (TRA2065)
  • Powerful TRX-4 Dig/Shift servo upgrade
  • Suitable for other sub micro servo applications
  • Waterproof up to 1 meter
  • 64 oz-in of torque and .09 transit speed @ 6.0V
  • Digital circuitry
  • Cored motor
  • Metal gears
  • 315mm servo lead
  • Includes plastic 4 way, dual, and single arm servo horns and mounting hardware
  • 1 Year warranty against manufacturer defects*
*NOTE: Warranty does not cover stripped gears or damage caused by abuse.

Operating Voltage: 4.8-6.0V
Operating Speed: .09 @ 6.0V
Dynamic Torque: 64 oz in @ 6.0V (4.6kg cm)
Weight: 13 grams
Output Shaft: 25T
Motor Type: Cored
Wire Length: 315mm
Dimensions: 23.5x12.50x25mm (30mm tall @ output)

NOTE: Be sure to set your End Point Adjustments when using this servo to ensure long life and performance. For more information on End Point Adjustments, please watch the video below.

This product was added to our catalog on December 21, 2018

Daniel Muhs
Verified Owner
Sunday, Nov 29 2020 (about 3 years ago)
EcoPower 640T 13g Waterproof Metal Gear Digital Sub Micro Servo
I have not had these servos installed in my TRX4 for very long, but so far they seem to be a significant improvement over the stock servos that they replaced. I did have one issue installing the shift servo. I have a Bowhouse battery tray and the slight difference in dimensions from the stock servo caused the shift linkage to rub the battery tray. I trimmed a small amount of plastic off of the battery tray to increase the clearance and the shift servo functions correctly now.

UPDATE: One run in the snow and one of the three servos locked up. Maybe they aren’t completely waterproof.
Richard Tourville
Verified Owner
Monday, Feb 1 2021 (about 3 years ago)
EcoPower 640T 13g Waterproof Metal Gear Digital Sub Micro Servo
Metal gearing and waterproof is a plus but don't expect miracles. I smoked one of the two that I bought within a month of installing them.