---
product_id: 674815714
title: "Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2）"
brand: "smraza"
price: "$88.05"
currency: USD
in_stock: true
reviews_count: 5
url: https://www.desertcart.us/products/674815714-smraza-45kg-coreless-servo-motor-high-torque-steering-2pcs-8
store_origin: US
region: United States of America
---

# Waterproof & weatherproof Ultra-fast 0.10s/60° response 51kg.cm torque powerhouse Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2）

**Brand:** smraza
**Price:** $88.05
**Availability:** ✅ In Stock

## Summary

> ⚡ Dominate Every Terrain with Power, Precision, and Waterproof Confidence!

## Quick Answers

- **What is this?** Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2） by smraza
- **How much does it cost?** $88.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/674815714-smraza-45kg-coreless-servo-motor-high-torque-steering-2pcs-8)

## Best For

- smraza enthusiasts

## Why This Product

- Trusted smraza brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Meets Speed:** Lightning-fast 0.10 second per 60° response ensures razor-sharp steering accuracy in every maneuver.
- • **Plug & Play Versatility:** Compatible with 1/8, 1/10, and 1/12 scale RC models including TRX4 and SCX10, perfect for cars, crawlers, boats, and robots.
- • **Built to Brave the Elements:** Fully waterproof with rubber-sealed screws and CNC aluminum casing for durability in any terrain or weather.
- • **Unmatched Torque for Ultimate Control:** Delivers a massive 51kg.cm torque to conquer steep climbs and heavy loads effortlessly.
- • **Rock-Solid Reliability with Full Metal Gears:** All-steel gears resist vibration and impact, guaranteeing long-lasting performance under pressure.

## Overview

The Smraza 45KG Coreless Servo Motor is a high-torque, ultra-fast digital servo designed for demanding RC applications. Featuring 51kg.cm torque, 0.10s/60° speed, full metal gears, and waterproof construction, it excels in rock crawling, racing, and heavy-load tasks across 1/8 to 1/12 scale models. Its durable CNC aluminum casing and interference-resistant coreless design ensure reliable, quiet operation in harsh environments, making it the go-to choice for serious RC enthusiasts seeking performance and longevity.

## Description

45kg servo

Review: Looks, feels, and performs like my higher coat servos. I wanted something with enough strength to move the weight of the actual crawler for when things go "sideways"! This servo does that without breaking a sweat. It doesnt even make noise while pushing the crawler back to all four wheels. Its pretty fast for its stated torque, usually when purchasing a higher torque servo you loose something in the way of speed, but this servo breaks that normality giving it a good value for your money. I have gotten it wet before I opened it up and coated the PCB and also the motor and potentiometer leads with MG Chemicals Conformal Coating *which makes your electronics like recievers and servos COMPLETELY waterproof. After coating in Silicon Conformal I drove the truck UNDER WATER , yes you read correctly, under water in a running stream about 13 feet across and max 2.5 to 3 feet deep. The crawler came up the opposite bank fine and kept on going. I checked the servo anyway to see what if any water may have gotten inside but it was dry. The reciever was soaked through but dont care as the Conformal Coating does its job perfectly. The servo hasn't had any issues with centering for me using the stock Redcat radio or with the upgraded Flysky FS-G7P radio. The wire length is pretty long so I had no issues being able to zip tie it where I wanted it out of the way of things. So far its been durable and has power to spare. I am using it with 7.4V.
Review: I've used this on 2 different SOA conversions and both have been flawless. Must stronger than the factory servo on a Redcat Ascent and TRX4. I nicked the wire on one of them (my fault) and had to repair but the unit comes with a very long servo wire so it was easy to cut it back past the damaged section and resolder to the control board in the servo. Very easy to work on and now that I've routed the wire away from my suspension the unit has been rock solid since. If you need an affordable but powerful 1/10 scale servo this is the one.

## Features

- [Compatible with RC Cars]: Featuring 2BB and a 25T Metal RC Servo Horn, This Servo Motor Is Suitable for a Wide Range of Remote Control Models, Including 1/8 Servo, 1/10 Servo and 1/12 Scale Rock Crawler Truck, for RC Cars/Robots/Airplane/Mechanical Arm/Quadcopter/Boats and So On.Compatible with TRX4 and SCX10.Dimensions: 40 x 39 x 20mm (1.57 x 1.53 x 0.79in) Weight:70g (2.47oz), Degree:0-180.
- [51 kg High Torque Servo]: Operates Efficiently at 5V–8.4V, Delivering 51 kg.cm (708.26 oz.in) Torque at 8.4V. Ideal for RC Crawlers Climbing Steep Slopes and Rocks, and Monster Trucks in Mud Racing and Heavy-load Climbing, Ensuring Reliable Performance in Demanding Conditions.
- [0.10 sec/60°And Low Noise]：With Rapid 0.11sec/60°@ 7.4V and 0.10sec/60°@ 8.4V Response, This High Speed Servo Provides Spot-on Precision for Critical Rock Crawling/Racing Control. Low Noise Operation While Adjusting Steering Under Heavy Load in Rocky Terrain.
- [Full Metal Gears]: The High Precision All-steel Gears Servo Provide Durability and Reliability, Exhibit Superior Resistance to Vibration and Impact, Making Them Well-suited for High - Power Applications Requiring Stable Performance in Harsh Environments.
- [Coreless Servo]: With a High - Precision Potentiometer and Digital Chip, This RC Car Servo Ensures Stability and Interference Resistance. Its CNC Aluminum Casing Aids Heat Dissipation and Minimizes Noise, While Waterproof Rubber-sealed Screws Enhance Performance and Lifespan.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Assembly Required | No |
| Batteries Required | No |
| Batteries Included | No |
| Material Type(s) | Steel |
| Product Dimensions | 4.09 x 3.99 x 2.01 cm; 100 g |
| Item part number | SC55-A |
| Manufacturer recommended age | 15 years and up |
| Manufacturer | Smraza |
| Country of Origin | USA |
| Item Weight | 100 g |

## Images

![Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2） - Image 1](https://m.media-amazon.com/images/I/512qlxx4j1L.jpg)
![Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2） - Image 2](https://m.media-amazon.com/images/I/51XNBpFSiNL.jpg)
![Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2） - Image 3](https://m.media-amazon.com/images/I/51cQ5ysTI3L.jpg)
![Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2） - Image 4](https://m.media-amazon.com/images/I/51dv07IOVUL.jpg)
![Smraza 45KG Coreless Servo Motor High Torque Steering: 2pcs 8.4V Waterproof Servo Digital Full Metal Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°×2） - Image 5](https://m.media-amazon.com/images/I/51vi-nbMLGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***Y on 31 October 2024*

Looks, feels, and performs like my higher coat servos. I wanted something with enough strength to move the weight of the actual crawler for when things go "sideways"! This servo does that without breaking a sweat. It doesnt even make noise while pushing the crawler back to all four wheels. Its pretty fast for its stated torque, usually when purchasing a higher torque servo you loose something in the way of speed, but this servo breaks that normality giving it a good value for your money. I have gotten it wet before I opened it up and coated the PCB and also the motor and potentiometer leads with MG Chemicals Conformal Coating *which makes your electronics like recievers and servos COMPLETELY waterproof. After coating in Silicon Conformal I drove the truck UNDER WATER , yes you read correctly, under water in a running stream about 13 feet across and max 2.5 to 3 feet deep. The crawler came up the opposite bank fine and kept on going. I checked the servo anyway to see what if any water may have gotten inside but it was dry. The reciever was soaked through but dont care as the Conformal Coating does its job perfectly. The servo hasn't had any issues with centering for me using the stock Redcat radio or with the upgraded Flysky FS-G7P radio. The wire length is pretty long so I had no issues being able to zip tie it where I wanted it out of the way of things. So far its been durable and has power to spare. I am using it with 7.4V.

### ⭐⭐⭐⭐⭐ Review
*by B***N on 4 January 2026*

I've used this on 2 different SOA conversions and both have been flawless. Must stronger than the factory servo on a Redcat Ascent and TRX4. I nicked the wire on one of them (my fault) and had to repair but the unit comes with a very long servo wire so it was easy to cut it back past the damaged section and resolder to the control board in the servo. Very easy to work on and now that I've routed the wire away from my suspension the unit has been rock solid since. If you need an affordable but powerful 1/10 scale servo this is the one.

### ⭐ Review
*by B***! on 16 June 2025*

Servo looked great, felt good, sounded clean and strong.. was very strong after doing the proper install and testing it on my work bench. I was very happy with it until I crawled on my crawler course for I kid you not 30 SECONDS! On the VERY first obstacle I had to turn on the gears in the servo immediately stripped out.. JUNK. I used this servo on my TRX4 high trail with lots of brass parts.. it’s a decent heavy truck but STILL there is ZERO reason all the gears should have stripped out internally in the servo that quickly. It didn’t even load the servo up or anything.. it wasn’t like it was struggling to turn.. it turned no issue and then suddenly I went to turn back the other direction and it just made a whining noise. The servo only steers the tires now if I hold the front tires in the air with the truck off the ground .. ANY resistance what so ever just makes it not steer at all along with a whining noise like the motor is spinning and gears are stripped. Super upset cuz I needed it for an event this weekend and it ruined my fun. Shoulda went with the $40.00 all aloy cased servo by that other company instead of this half plastic half metal servo with supposed “metal gears” which must be made out of monkey metal. PS. I use an aftermarket traxxas metal servo horn so I know the horn is not stripped.. it’s def the internal gears of the servo. HUGE bummer.

## Frequently Bought Together

- 45KG Coreless Servo Motor High Torque Steering: Smraza 8.4V Waterproof Servo Digital Stainless Steel Gear Servo for RC 1/10 1/8 1/12 Scale Car Truck Crawler/Robot/Boat with 25T Servo Horn（180°）
- HOBBYWING Quicrun Fusion SE 540 Spec (Fusion SE 1800KV)
- Radiolink R6FG 6 Channels 2.4GHz RC Receiver with Gyro, Surface Long Range Control RX for Vehicle Drifting/Crawler/Truck/Boat Works with Radio Controller RC4GS V3/RC6GS V3/RC8X/T8FB/T8S/T12D/T16D

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-05*