---
product_id: 62500363
title: "CNC Aluminum Transmission Case Gearbox with Steel Gear for TRX4 T4 | 1/10th RC Crawler Car Upgrade Parts"
brand: "rclions"
price: "€ 124.45"
currency: EUR
in_stock: true
reviews_count: 13
category: "Rclions"
url: https://www.desertcart.hr/products/62500363-cnc-aluminum-transmission-case-gearbox-with-steel-gear-for-trx4
store_origin: HR
region: Croatia
---

# High-grade 32P 45T spur gear CNC precision aluminum alloy Corrosion-resistant steel gears CNC Aluminum Transmission Case Gearbox with Steel Gear for TRX4 T4 | 1/10th RC Crawler Car Upgrade Parts

**Brand:** rclions
**Price:** € 124.45
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your RC crawler’s heart—where precision meets power!

## Quick Answers

- **What is this?** CNC Aluminum Transmission Case Gearbox with Steel Gear for TRX4 T4 | 1/10th RC Crawler Car Upgrade Parts by rclions
- **How much does it cost?** € 124.45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/62500363-cnc-aluminum-transmission-case-gearbox-with-steel-gear-for-trx4)

## Best For

- rclions enthusiasts

## Why This Product

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

## Key Features

- • **Optimized Gear Ratios:** Featuring 32P 45T spur gear and multiple internal gears for smooth, reliable power transfer.
- • **Enhanced Bearing Support:** Equipped with precision 5*11*4mm bearings to reduce friction and extend gearbox life.
- • **Plug-and-Play Compatibility:** Direct fit for TRX4 T4 1/10 RC crawler—no modifications needed, just install and dominate.
- • **Precision CNC Aluminum Alloy:** Engineered for ultimate durability and sleek aesthetics, ensuring your TRX4 stands out on every trail.
- • **Corrosion-Resistant Steel Gears:** Built to withstand rugged outdoor adventures without compromising performance or longevity.

## Overview

This CNC-machined aluminum transmission case with steel gears is designed specifically for the TRX4 T4 1/10 RC crawler car. Combining high-quality aluminum alloy and corrosion-resistant steel, it delivers enhanced durability and performance. Featuring a 32P 45T spur gear, multiple internal gears, and precision bearings, it ensures smooth power transfer and long-lasting reliability. Easy to install with a direct fit, this gearbox upgrade is perfect for serious RC enthusiasts seeking both style and substance.

## Description

Product description CNC Aluminum Transmission for TRX4 Use for Traxxas TRX4 T4 1/10 RC crawler car. High Quality CNC Aluminum Alloy and Steel Spur Gear: 32P 45T Bearings: 5*11*4mm (Inner Diameter: 5mm,Outer Diameter: 11mm,Thickness: 4mm) Gasket: 5x8x0.5mm Transmission internal gear: 18T,30T input gears ,36T output gear Gears of transfer case : 27T 3 Gears of transfer case : 27T Output Shaft OD: 5mm

Review: Solid - As others stated add marine grease to the trans mine was dry. Direct fit everything worked no issues. Metal spur is alittle loud so I may switch back to plastic till that dies. Not bad at all for the price update: 2 days later let my 13 year old daughter mess around and some how she blew it up making a ticking noise try one more time if it die will go back to stock
Review: Very high quality. - Very good quality product. Fit with absolutely no issues. Would highly recommend opening the unit to fill with more grease. Also it it worth mentioning that if you intend to use the included metal spur gear that it will also require grease as the motor gear is metal. I ran it for a minute after installing and found that it was very loud before adding grease.

## Features

- Use for TRX4 T4 1/10 RC crawler car.
- Material: High Quality Aluminum Alloy and Steel
- Durability, corrosion resistance, and great looks.
- Spur Gear: 32P 45T
- Fitted with metal internal gears and bearings.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07C1NP5SR |
| Additional Features | Portable |
| Age Range Description | Kid |
| Are Batteries Required | No |
| Batteries are Included | No |
| Best Sellers Rank | #199,200 in Toys & Games ( See Top 100 in Toys & Games ) #56 in RC Vehicle Transmission Gearboxes |
| Brand Name | RCLIONS |
| Color | Black |
| Customer Reviews | 4.2 out of 5 stars 211 Reviews |
| Included Components | Transfer case with gear |
| Indoor Outdoor Usage | Outdoor |
| Is Assembly Required | No |
| Item Weight | 250 Grams |
| Manufacturer | RCLions |
| Manufacturer Maximum Age (MONTHS) | 77 |
| Manufacturer Minimum Age (MONTHS) | 72.00 |
| Manufacturer Part Number | M004884 |
| Material Type | Alloy Steel, Aluminum, Metal |
| Model Name | M004884 |
| Model Number | M004884 |
| Number of Items | 1 |
| Operation Mode | manual |
| Power Source | Manual Powered |
| Size | 5mm |
| Theme | Car |
| Toy Vehicle Form | Crawler |
| UPC | 600607156188 |

## Images

![CNC Aluminum Transmission Case Gearbox with Steel Gear for TRX4 T4 | 1/10th RC Crawler Car Upgrade Parts - Image 1](https://m.media-amazon.com/images/I/51lal7y6bLL.jpg)

## Questions & Answers

**Q: Does this come with everything the new one has to convert the sport to two speed?**
A: Yes it comes with the two speed gears pre installed and the two speed fork and shaft for the shift servo but you will need to buy a servo and mount to operate it. 
beware: the metal spur gear is very loud compared to the stock one I run the plastic gear because it cuts down on noise. Hope this is helpful.

**Q: Will this fit the trx4 sport?**
A: Yes,but make sure grease all gears. I found it a little dry

**Q: Does this fit the TRX4 k 10 high trail?**
A: Absolutely and it's a fantastic transmission less play and less noise than stock I believe they are even hardened metal gears not the Traxxas "metal"

**Q: Does this fit the T-maxx 3.3**
A: Yes it fit

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid
*by A***S on October 7, 2022*

As others stated add marine grease to the trans mine was dry. Direct fit everything worked no issues. Metal spur is alittle loud so I may switch back to plastic till that dies. Not bad at all for the price update: 2 days later let my 13 year old daughter mess around and some how she blew it up making a ticking noise try one more time if it die will go back to stock

### ⭐⭐⭐⭐⭐ Very high quality.
*by A***C on August 4, 2020*

Very good quality product. Fit with absolutely no issues. Would highly recommend opening the unit to fill with more grease. Also it it worth mentioning that if you intend to use the included metal spur gear that it will also require grease as the motor gear is metal. I ran it for a minute after installing and found that it was very loud before adding grease.

### ⭐⭐⭐⭐ Shipped dry! Make sure to get grease!
*by K***R on April 25, 2023*

As other reviews stated, assembly ships dry. The screws holding it together were loose, thankfully I was pulling it apart anyways. It has some nice weight to it. It is louder than stock but that's just how metal gears sound. Only ran it twice now and it holds up decent. I suspect low gear is lower than stock as it's slower than stock, however it remains to be seen if has more torque. Over all would definitely recommend. I needed new transfer case gears and a new tail housing. This was the best bang for my buck so far.

## Frequently Bought Together

- RCLIONS CNC Aluminum Metal Transmission Case Gearbox with Steel Gear for TRX4 T4 1/10th RC Crawler Car
- RCLions Aluminum Alloy Motor Mount Base Bracket Upgrades Parts for TRX4 T4 1/10 RC Crawler Car
- RCLIONS Aluminum Alloy Motor Mount Base Bracket for TRX4 T4 1/10 RC Crawler Car Upgrades Parts (Black)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-11*