---
product_id: 614382219
title: "ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green"
brand: "arrma"
price: "¥59897"
currency: JPY
in_stock: true
reviews_count: 13
category: "Arrma"
url: https://www.desertcart.jp/products/614382219-arrma-1-18-granite-grom-mega-380-brushed-4x4-monster
store_origin: JP
region: Japan
---

# 30 km/h top speed Spektrum 2S LiPo battery included Durable metal gears & hex hardware ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green

**Brand:** arrma
**Price:** ¥59897
**Availability:** ✅ In Stock

## Summary

> 🚀 Small Scale, Massive Impact – Own the terrain, anytime, anywhere!

## Quick Answers

- **What is this?** ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green by arrma
- **How much does it cost?** ¥59897 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/614382219-arrma-1-18-granite-grom-mega-380-brushed-4x4-monster)

## Best For

- arrma enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Waterproof metal-geared servo and tough composite chassis ensure durability
- • **Ready-to-Race:** Includes Spektrum 2S LiPo battery & smart charger for instant bashing action
- • **All-Terrain Beast:** Enclosed drivetrain and oil-filled shocks conquer rough terrain effortlessly
- • **Compact Powerhouse:** 1/18 scale monster truck with 4WD for big thrills in a small package
- • **User-Friendly Design:** Clipless body mounts for quick, tool-free customization and maintenance

## Overview

The ARRMA 1/18 Granite GROM MEGA 380 is a compact yet powerful 4WD monster truck featuring a 30 km/h top speed, Spektrum 2S LiPo battery with smart charger, and rugged metal gears. Designed for both indoor and outdoor use, it boasts an enclosed drivetrain, oil-filled coil-over shocks, and waterproof components for all-terrain durability. Its clipless body mount system allows quick customization, making it perfect for millennial professionals seeking high-performance RC fun that fits their dynamic lifestyle.

## Description

FeaturesAwesome monster truck styling with three color choicesPowerful Spektrum 2S LiPo battery & safe, easy-to-use chargerEasy body attachment and removalEnclosed drivetrain for all-terrain protection Reliable, high-quality hex hardware Durable composite chassisHigh-traction 4WD transmission Tough metal gearsIndependent suspension and oil-filled, coil-over shocksTough monster truck wheels and tiresImpact-absorbing front and rear bumperSpektrum SLT2 2-channel 2.4GHz radio Spektrum SLT 2-in-1 25A waterproof ESC and receiverSpektrum SX110 waterproof metal-geared servo2-Year limited warranty (see website for details)OverviewAmped-up ARRMA® RC blasting gets "fun-sized" with the fast, tough, and ready-to-run GRANITE™ GROM 4X4 Monster Truck. At 1/18 scale, it's small enough to take along anywhere. And the GRANITE GROM delivers a big dose of genuine ARRMA performance and durability whenever you get the urge to bash. Enjoy some after-school RC monster truck action with friends. Sneak in a little bashing during your office lunch break. Whether you're a young beginner or an experienced RC basher, the GRANITE GROM easily fits time for ARRMA RC bashing into your way of life. It's tough, fast — and conveniently small.Unlike many manufacturers of mini RC models, ARRMA made no compromises when shrinking this basher down to small scale size. The GRANITE GROM 4X4 Monster Truck is precision-engineered to the same high standards as larger ARRMA RC vehicles. It also has a clipless body mount design that keeps the body securely attached but easy to remove for all drivers, young and old

Review: Fun inside and out - I have a few RC trucks, but they're all too large and fast to use inside. This truck fills that gap. This thing is SUPER fun inside, but is fast and tough enough to use outdoors. The unit feels very well built, and looks great, and being ARRMA you know youll have the aftermarket support for hop ups and replacement parts if needed. Battery life is great, easily getting 30 minutes of inside play before I slap the charger into it, and i don't think I've run the battery dry yet. Ill likely get at least one more of these because they're so fun. I really like the ability to limit steering at throttle, definitely well thought out features for a starter truck, that can grow in abilities with the user.
Review: Fun RC Car! - I got this on sale for $108. This has been one of my better buys. I like this rc car. I got the V2. Downside being the plastic on one of the front outside axels failed and the axel popped out and disappeared somwhere. Waiting on the replacement metal parts now from Arrma ARA-311198($40 bucks). Upgrades add up quick!

## Features

- Monster Truck Styling: Features awesome monster truck design available in three color choices
- Power System Included: Comes with powerful Spektrum 2S LiPo battery and safe, easy-to-use Smart charger for convenient operation
- Easy Body Attachment: Clipless body mount design allows for quick and simple body attachment and removal
- All-Terrain Protection: Enclosed drivetrain provides protection for all-terrain bashing and durability
- Quality Hardware: Built with reliable, high-quality hex hardware for long-lasting performance
- 4WD Performance: High-traction 4WD transmission with tough metal gears delivers powerful off-road capability
- Advanced Suspension: Independent suspension system with oil-filled coil-over shocks for smooth handling over rough terrain

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CTJTL1VS |
| Additional Features | Brushless motor, closed drivetrain for all terrain, waterproof Spektrum™ SX110 metal gear steering servo, IC2® connection |
| Age Range Description | 14+ |
| Battery Description | Lithium-Ion Polymer |
| Best Sellers Rank | #64,319 in Toys & Games ( See Top 100 in Toys & Games ) #112 in Hobby RC Trucks |
| Brand Name | ARRMA |
| Color | Green |
| Customer Package Type | FFP |
| Customer Reviews | 4.4 out of 5 stars 302 Reviews |
| Educational Objective | Learning through play and exploration |
| Included Components | (1) ARRMA MEGA 380 28T brush motor, (1) ARRMA® GRANITE™ GROM Small Scale 4X4 Monster Truck RTR, (1) Spectrum 2.4GHz SLT2™ remote control, (1) waterproof spectrum SX110 metal gear steering servo, (1) Spektrum Smart 7.4V 1400mAh 2S 30C hard case LiPo battery with IC2®, (1) Spectrum S10 Smart G2 Mini 2S USB-C charger, (1) Waterproof Spectrum™ SLT™ 2-in-1 25A Regulator/Receiver Unit, Battery, Product … |
| Indoor Outdoor Usage | Outdoor |
| Item Dimensions | 12 x 9 x 7.9 inches |
| Item Highlight | RC Truck, Includes Battery & Charger, ARA2102T3 |
| Item Type Name | remote controlled car |
| Item Weight | 1.8 pounds |
| Manufacturer | ARRMA |
| Manufacturer Part Number | ARA2102T3 |
| Manufacturer recommended age | 14 years and up |
| Material Type | Plastic Metal Rubber |
| Maximum Speed | 30 kilometers per hour |
| Model Name | ARRMA RC Truck 1/18 GRANITE GROM MEGA 380 Brushed 4X4 Monster Truck RTR |
| Model Number | ARA2102T3 |
| Model Year | 2023 |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Players | 1 |
| Operation Mode | Electric |
| Power Source | Battery Powered |
| Scale | 1:18 Scale |
| Set Name | Yes |
| Size | 12 inches x 9 inches x 7.9 inches |
| Subject Character | Granite Grom |
| Theme | Truck |
| Toy Vehicle Form | Car |
| Unit Count | 1 Count |

## Images

![ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green - Image 1](https://m.media-amazon.com/images/I/7130uIEdCML.jpg)
![ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green - Image 2](https://m.media-amazon.com/images/I/51+c3doMqPL.jpg)
![ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green - Image 3](https://m.media-amazon.com/images/I/71qoJdsTuPL.jpg)
![ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green - Image 4](https://m.media-amazon.com/images/I/71gVbawT28L.jpg)
![ARRMA 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR, Green - Image 5](https://m.media-amazon.com/images/I/715Qf6zRkTL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fun inside and out
*by N***S on January 11, 2025*

I have a few RC trucks, but they're all too large and fast to use inside. This truck fills that gap. This thing is SUPER fun inside, but is fast and tough enough to use outdoors. The unit feels very well built, and looks great, and being ARRMA you know youll have the aftermarket support for hop ups and replacement parts if needed. Battery life is great, easily getting 30 minutes of inside play before I slap the charger into it, and i don't think I've run the battery dry yet. Ill likely get at least one more of these because they're so fun. I really like the ability to limit steering at throttle, definitely well thought out features for a starter truck, that can grow in abilities with the user.

### ⭐⭐⭐⭐⭐ Fun RC Car!
*by H***A on January 20, 2026*

I got this on sale for $108. This has been one of my better buys. I like this rc car. I got the V2. Downside being the plastic on one of the front outside axels failed and the axel popped out and disappeared somwhere. Waiting on the replacement metal parts now from Arrma ARA-311198($40 bucks). Upgrades add up quick!

### ⭐⭐⭐⭐⭐ A+ Basher
*by T***H on July 1, 2026*

Awesome basher, the only thing I would recommend right out of the gate is upgrading the wheels, but if you're careful on throttle you won't tear these ones up. Super fun very quick truck.

## Frequently Bought Together

- ARRMA RC Truck 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR with Battery & Charger, Green, ARA2102T3
- Spektrum SMART 1400mAh 2S 7.4V Smart G2 30C LiPo; IC2 Connector, SPMX142S30H2
- ARRMA RC Truck 1/18 Granite GROM MEGA 380 Brushed 4X4 Monster Truck RTR with Battery & Charger, Blue, ARA2102T1

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-06*