Parts/Radio & control/Servos/EcoPower WP120T Waterproof High Torque Metal Gear Servo for 1/10 4wd Traxxas™, ARRMA™, Axial™, Losi™ & others
EcoPower WP120T Waterproof High Torque Metal Gear Servo for 1/10 4wd Traxxas™, ARRMA™, Axial™, Losi™ & others
EcoPower

EcoPower WP120T Waterproof High Torque Metal Gear Servo for 1/10 4wd Traxxas™, ARRMA™, Axial™, Losi™ & others

Part # ECP-120T3.4(70)
Where to buy
$76.99
AMain Hobbies
Seen Oct 12, 2026
$76.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

Servo Overview:

The EcoPower WP120T Coreless Waterproof "High Torque" Metal Gear Digital Servo is a great choice if you are looking for an affordable, waterproof, high voltage upgrade. The WP120T makes 337 oz-in of torque and .11 transit speed at 6.0V. But when you crank the voltage up to 7.4V, the WP120T delivers 400 oz-in and .09 speed, making it an excellent option for scale crawlers, 1/10 monster trucks, 1/10 2WD and 4WD buggies. Plus, its a great option for boats, and other surface applications that can benefit from a high torque, high voltage, waterproof servo. Lifetime Gear Warranty through Amain Hobbies for added confidence and durability.

The WP120T is waterproof up to 1-meter so driving in the rain, puddles, snow and mud are not an issue. Metal gears were used to create a durable gear train that can be serviced if needed, and the plastic case with aluminum center section keeps the servo running cool while remaining lightweight. Plus, the digital circuitry allows compatibility with vehicles that use traction control/gyro systems, making the WP120T a viable option for models that are equipped with a stability system. Want more? We back this servo up with a 1 year warranty - so drive with confidence knowing that EcoPower has your back, with a tough, powerful servo upgrade that wont break the bank - and wont slow you down when mother nature tries to change your plans.

 

Features:

  • Lifetime Gear Warranty Backed by Amain Hobbies
  • Includes one aluminum clamping servo horn
  • Affordable option for 1/10 monster truck, 1/10 2WD and 4WD buggies, trucks, boats and more!
  • Waterproof up to 1 meter
  • 337 oz-in of torque and .11 transit speed @ 6.0V
  • 400 oz-in of torque and .09 transit speed @ 7.4V
  • Digital circuitry
  • Coreless motor
  • Metal gears
  • Lightweight plastic upper and lower case w/black anodized aluminum center case
  • Dual ball bearings
  • 220mm servo lead
  • Includes plastic star, 4 way, dual, single and round type servo horns and mounting hardware
  • 1 Year warranty against manufacturer defects*
*NOTE: Warranty does not cover stripped gears or damage caused by abuse.

Servo Model
WP120T
Recommended Application 1/10 Scale Surface
Waterproof
Yes
Operating Voltage 4.8 - 7.4V
Operating Temperature 14° to 140° F (-10 to +60° C)
Operating Speed @ 6.0V 0.11/60° sec
Operating Speed @ 7.4V 0.09/60° sec
Dynamic Torque @ 6.0V 337 oz-in (24.4 kg-cm)
Dynamic Torque @ 7.4V 400 oz-in (28.8 kg-cm)
Motor Type Coreless
Output Shaft 25 Tooth
Gears Metal w/Lifetime Gear Warranty
Weight 53g
Pulse/Frequency 1520?s / 333hz

 

Specs


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.  

 

CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

Reviews3.4 · 70 reviews

Scott Cawthonon EcoPower WP120T Waterproof High Torque Metal Gear Servo

I installed this into my 1.9 rig, took it through some vigorous terrain, alot of rock climbing and mud and this servo performed flawlessly, i ran it on the 7.4v setting so it had plenty of torque to get me through the run. I am very happy with it, I highly recommend it.

13 found this helpful
Anonymouson EcoPower WP120T Waterproof High Torque Metal Gear Servo

OK, I understand rebranding, but this is a JX CLS5830HV at over twice the price. Great servo, but not worth $70.

7 found this helpful
John AshworthVerified owneron EcoPower WP120T Waterproof High Torque Metal Gear Servo

This servo did not make it through it's first outing, 20 minutes of light use and it stripped. The gear that stripped was the biggest aluminum gear not the plastic one. I am going to replace the gears for 12 dollars because I don't have the cash right now to buy a better option. save your self the hassle and get a better servo. this was a big let down for me. It was a very smooth servo for the short time it was working. After the rebuild my luck was not any better, I had the same problem it just lasted a little bit longer than the original. My end points are set correct and after going with a cheaper servo I have had no issues at all (Though the ECO was smoother and quieter) I love Amain but not so much the servo experience. I don't like giving bad reviews I am just giving my honest opinion.

7 found this helpful
Matt HofsterVerified owneron EcoPower WP120T Waterproof High Torque Metal Gear Servo

Found my new crawler servo! This thing is a beast. I have it in my Venture and it's been awesome. Can't beat the price!

4 found this helpful
AnonymousVerified owneron EcoPower WP120T Waterproof High Torque Metal Gear Servo

TOTAL JUNK This servo is junk it broke within 10 minutes in my Traxxas Trx-4. For the price this servo should have steel gears all around but this one doesn't it has a plastic gear in the mix which I broke under normal use. I installed and removed the servo the same day, went with a Savox SW-1210, which is built right. The EcoPower servo has a ton of torque and is very impressive on the bench, but it will fall apart if you plan to do off-roading.

3 found this helpful
What reviewers say

Reviews are sharply divided. Many buyers praise the servo's speed, torque and low price, and several report long-term use in crawlers, basher and race trucks without issues, with some noting it is quiet and waterproof. A recurring complaint across many reviews is stripped or broken gears, particularly the plastic centre gear, often within a few runs or a single battery, with some owners also reporting overheating, failed centring, or units failing out of the box. Several reviewers note that replacement gear sets are inexpensive, and some compare it unfavourably with higher-priced servos. Some reviews note the product is a rebrand of a JX unit. Reliability appears inconsistent.

  • + Fast and powerful for the price
  • + Good torque on crawlers and trail trucks
  • + Waterproof and quiet operation
  • + Inexpensive replacement gear sets
  • − Gears strip or break, often the plastic centre gear
  • − Early failures and units failing out of the box
  • − Overheating and loss of centring reported
  • − Not worth the price compared with higher-end servos
Summary generated from the reviews above.

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