---
product_id: 4071297
title: "31425S HS-425BB Pro BB Servo"
brand: "hitec rcd"
price: "7020 som"
currency: KGS
in_stock: true
reviews_count: 13
category: "Hitec Rcd"
url: https://www.desertcart.kg/products/4071297-31425s-hs-425bb-pro-bb-servo
store_origin: KG
region: Kyrgyzstan
---

# 0.16 sec speed @6V Lightweight 45g compact size Dual ball bearings & karbonite gears 31425S HS-425BB Pro BB Servo

**Brand:** hitec rcd
**Price:** 7020 som
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your RC game with precision that lasts and speed that thrills!

## Quick Answers

- **What is this?** 31425S HS-425BB Pro BB Servo by hitec rcd
- **How much does it cost?** 7020 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/4071297-31425s-hs-425bb-pro-bb-servo)

## Best For

- hitec rcd enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Weighing just 45 grams with a sleek 40x20x37 mm footprint, it fits seamlessly into your precision RC builds without bulk.
- • **Speed Meets Efficiency:** Achieve lightning-fast 0.16 sec response at 6V while consuming 2.5x less power than digital servos—quiet and energy-smart.
- • **Precision in Every Move:** Dual ball bearings and karbonite gears deliver ultra-smooth, long-lasting performance for your large-scale RC projects.
- • **Built to Last, Built to Win:** Karbonite gears tested beyond 300,000 cycles ensure durability without the brittleness of metal or nylon alternatives.
- • **Affordable Pro-Grade Quality:** At just $20, get premium analog servo performance trusted by seasoned RC pilots for scale and slow-flying electric planes.

## Overview

The Hitec RCD 31425S HS-425BB Pro BB Servo is a compact, lightweight analog servo featuring dual ball bearings and durable karbonite gears. It offers a rapid 0.16-second response time at 6V with torque up to 57 oz./in, optimized for large-scale electric RC planes. Known for its quiet operation and exceptional gear longevity tested beyond 300,000 cycles, it balances precision, efficiency, and affordability, making it a top choice for professional RC enthusiasts.

## Description

From the Manufacturer The HS-425BB is offered with dual ball bearings, impact resin gears and high performance circuitry. As one of our longest running production servos, it has proven to be a durable and dependable product year after year. Specifications Motor Type: 3 Pole Bearing Type: Dual Ball Bearing Speed (4.8V/6.0V): 0.21/0.16 sec @ 60 deg. Torque oz./in. (4.8V/6.0V): 46/57 Torque kg./cm. (4.8V/6.0V): 3.3/4.1 Size in Inches: 1.59x0.77x1.44 Size in Millimeters: 40.39x19.56x36.58 Weight ounces: 1.60 Weight grams: 45.36.

Review: Excellent for large scale electric RC planes - I use these in large scale RC planes. I just bought 4 to put into my new SIG Kadet Senior 2 meter, 78" wingspan, 8 pounds lbs. The servos are precise, quiet, and if you use a small #1 or #0 Phillips head screwdriver you will NOT strip the screws. These are perfect for scale/slow flying large scale electric planes. I do not recommend these for gas glow planes, or RC cars. The karbonite gears while being more precises, lighter, and not wearing down, they are more brittle and the vibrations from gas glow motors, and crashes from RC cars will more easily break your servo gears. If you fly large scale electric airplanes you will not have an issue with the karbonite gears and will benefit from the precision, longer wearing gears, and lower power consumption from analog servos. Advantages of this servo. Price $20 is very cheap for the quality you receive, especially in 2021 when prices of electronics are rising in this hobby. Analog is better for my SIG airplane, because I do not need crazy fast speed, or insane torque. Analog runs quieter and consumes 2.5x LESS power than standard digital servos. * Compared to Hitec D645MW, Futaba D3305 Karbonite. Yes, it has its downsides. It is more brittle than metal or nylon, but it wears the BEST out of the three gear train materials. Karbonite can also be cast and made more precisely than metal or nylon. Karbonite has been tested to more than 300,000 cycles with little to no wear! Metal, you can get 150-200 flights until the gear-train flop poses a risk (surface flutter) and requires replacements. Why is Karbonite the best material for my Sig Kadet Senior? Because it's lighter, and wears the best, and provides excellent precision, and happens to be cheap too! If you are needing a servo that will get beat up a lot, or ran on a gas or glow engine vehicle, I recommend metal, but if your upmost priority is precision, karbonite is the way to go. Money not being an issue, I considered the ProModeler 90, Hitec D625MW, D645MW, Futaba S3004, S3305, BlueBird BMS-621DMG+HS, Onyx (Tactic) S45 MG. I decided on the Hitec HS-485HB Karbonite because the gears last longer for my application, are more precise, consumes less power, and is still very affordable.
Review: Decent, affordable, tough servo. - Its good quality, ive been using it always on some of my rc cars. Its tough, so far it hasnt failed me yet. I love it.

## Features

- Speed (4.8V/6.0V): 0.21/0.16 sec @ 60 degree
- Torque oz./in. (4.8V/6.0V): 46/57, Torque kg./cm. (4.8V/6.0V): 3.3/4.1
- Size in Inches: 1.59x0.77x1.44, Size in Millimeters: 40.39x19.56x36.58
- Weight ounces: 1.60, Weight grams: 45.36

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006O3WXM |
| Best Sellers Rank | #150,203 in Toys & Games ( See Top 100 in Toys & Games ) #224 in RC Servos |
| Date First Available | February 24, 2007 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.08 ounces |
| Item model number | HRC31425S |
| Manufacturer | HRP (Level 3 Products) |
| Product Dimensions | 1.18 x 0.79 x 1.18 inches |

## Images

![31425S HS-425BB Pro BB Servo - Image 1](https://m.media-amazon.com/images/I/61CVTJ15PoL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent for large scale electric RC planes
*by J***Z on May 31, 2021*

I use these in large scale RC planes. I just bought 4 to put into my new SIG Kadet Senior 2 meter, 78" wingspan, 8 pounds lbs. The servos are precise, quiet, and if you use a small #1 or #0 Phillips head screwdriver you will NOT strip the screws. These are perfect for scale/slow flying large scale electric planes. I do not recommend these for gas glow planes, or RC cars. The karbonite gears while being more precises, lighter, and not wearing down, they are more brittle and the vibrations from gas glow motors, and crashes from RC cars will more easily break your servo gears. If you fly large scale electric airplanes you will not have an issue with the karbonite gears and will benefit from the precision, longer wearing gears, and lower power consumption from analog servos. Advantages of this servo. Price $20 is very cheap for the quality you receive, especially in 2021 when prices of electronics are rising in this hobby. Analog is better for my SIG airplane, because I do not need crazy fast speed, or insane torque. Analog runs quieter and consumes 2.5x LESS power than standard digital servos. * Compared to Hitec D645MW, Futaba D3305 Karbonite. Yes, it has its downsides. It is more brittle than metal or nylon, but it wears the BEST out of the three gear train materials. Karbonite can also be cast and made more precisely than metal or nylon. Karbonite has been tested to more than 300,000 cycles with little to no wear! Metal, you can get 150-200 flights until the gear-train flop poses a risk (surface flutter) and requires replacements. Why is Karbonite the best material for my Sig Kadet Senior? Because it's lighter, and wears the best, and provides excellent precision, and happens to be cheap too! If you are needing a servo that will get beat up a lot, or ran on a gas or glow engine vehicle, I recommend metal, but if your upmost priority is precision, karbonite is the way to go. Money not being an issue, I considered the ProModeler 90, Hitec D625MW, D645MW, Futaba S3004, S3305, BlueBird BMS-621DMG+HS, Onyx (Tactic) S45 MG. I decided on the Hitec HS-485HB Karbonite because the gears last longer for my application, are more precise, consumes less power, and is still very affordable.

### ⭐⭐⭐⭐⭐ Decent, affordable, tough servo.
*by C***. on June 2, 2024*

Its good quality, ive been using it always on some of my rc cars. Its tough, so far it hasnt failed me yet. I love it.

### ⭐⭐⭐⭐⭐ Certainly a good servo, especially for the price.
*by D***N on May 26, 2012*

Among hitec's lower-end standard servos, this one seems to be an excellent balance of speed, strength, reliability, and price, though it doesn't win any one of those categories. I order these when I need them quickly and don't mind spending the extra bit over ordering from any number of Asian manufacturers. However, if you are willing to wait a little bit, some of non-brand-name Asian servos are getting pretty good for much less money. The thing that the no-brand servos just haven't caught up on yet is reliability. Subjectively, my Hitec servos last much longer, and I have yet to get a bad one (out of quite a few).

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-28*