Arrma Granite 4x4 MEGA 550 RTR 1/10 Monster Truck (Blue) w/Spektrum SLT3 2.4GHz Radio

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Arrma Granite 4x4 MEGA 550 RTR 1/10 Monster Truck (Blue)
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4WD Traction with MEGA 550 Power!

Get ready to unleash the ultimate in off-road excitement with the Arrma Granite 4x4 MEGA 550 RTR 1/10 Monster Truck. Engineered for extreme all-terrain action, this monster truck amplifies the thrill of RC bashing with its powerful performance and rugged design. Whether you're tearing up the track or conquering rough trails, the Granite 4x4 MEGA 550 is your ticket to adrenaline-fueled adventure straight out of the box.

About the Granite 4x4 MEGA 550

Extreme All-Terrain Action

The Arrma Granite 4x4 MEGA 550 RTR 1/10 Monster Truck is built to conquer any terrain with its rugged design and powerful performance. Equipped with a MEGA 12T brushed 550 motor and a MEGA waterproof ESC, this monster truck delivers exhilarating speeds of over 30 mph, turning any outdoor environment into a thrilling off-road playground. Its multi-terrain dBoots Fortress MT tires provide superior traction, allowing you to tackle dirt, gravel, and pavement with ease. Whether you're blasting through rough trails or tearing up the track, the Granite 4x4 MEGA 550 is ready to take your RC bashing to the next level.

Modular Chassis Design

Experience fast and easy maintenance with the Granite 4x4 MEGA 550's innovative modular chassis design. Featuring a strengthened chassis with retained hinge pin plates, this monster truck is built to withstand the toughest bashing sessions. The easy-access power module and electronics module allow for quick removal and servicing, while the sealed wheels and vented tires prevent dirt and water from interfering with your performance. With its durable construction and convenient design, the Granite 4x4 MEGA 550 ensures minimal downtime and maximum fun.

Precision Control

Dominate the track with precision steering and control thanks to the Granite 4x4 MEGA 550's advanced electronics and redesigned steering system. The Spektrum SPMS650 digital servo provides 20% more torque than its predecessor, delivering improved steering feel and responsiveness. With the Spektrum 3-channel SLT3 2.4GHz radio and SLR300 Waterproof* Receiver, you can enjoy fast response times and reliable signal transmission, even in challenging conditions. Whether you're a beginner or experienced racer, the Granite 4x4 MEGA 550 offers customizable throttle modes and an ergonomic foam wheel for enhanced comfort and control.


  • MEGA 12T brushed 550 motor
  • MEGA waterproof ESC
  • IC3 connectors (EC3) compatible
  • 30MPH (48km/h) speed achievable in optimum driving conditions with optional gearing
  • Ready to Run (RTR) completion level
  • Stronger chassis and retained hinge pin plates
  • Castellated slipper pad and sliding gear mesh
  • Double wishbone suspension front and rear
  • Adjustable ride height
  • Multi-terrain dBoots Fortress MT tires


  • (1) Arrma Granite 4x4 MEGA 550 1/10 Scale 4WD Electric Monster Truck RTR
  • (1) MEGA Waterproof* ESC
  • (1) MEGA 12T Brushed 550 Motor
  • (1) Spektrum Waterproof* SPMS650 Digital Servo
  • (1) Spektrum SLR300 Receiver
  • (1) Spektrum 2.4GHz SLT3 3-Channel Transmitter
  • (1) 1/10 Granite 4x4 V3 MEGA Manual

Needed To Complete:

  • (1) 7 Cell NiMH Battery or 2S Lipo 7.4V Battery with EC3 or IC3 connector
  • (1) Compatible Battery Charger
  • (4) AA batteries for Transmitter


Scale 1/10
Drive 4WD
Power Source Electric
Length 17.76" (451mm)
Wheelbase 11.3" (287mm)
Width 13.46" (342mm)
Height 8.11" (206mm)
Weight 6.69lbs
Assembly Level Ready-To-Run

*NOTE: Ready-to-Run models come equipped with all electronics and include the transmitter needed for use. Please check the "Needed To Complete" above to make sure you have everything you need to get out and enjoy your RC model.


User Manual

This product was added to our catalog on May 15, 2024

Chad Sunderland
Verified Owner
Tuesday, Jun 4 2024 (6 weeks ago)
Arrma Granite 4x4 MEGA 550 RTR 1/10 Monster Truck (Blue)
Servo went out on the first battery pack which was disappointing. AMain got me a replacement quickly though (I contacted Horizon first and got no reply, I had my part from Amain before Horizon even responded!). Besides the initial disappointment with the servo, it's been solid. This is my sons truck and has already taken a lot of hard hits and have not broken anything. I would recommend this truck to anyone just getting into the hobby, and later on you can upgrade to brushless when you're ready for more speed.