ARRMA Granite GROM 1/18 4WD Ready-to-Run Monster Truck in Blue

The ARRMA Granite GROM 1/18 4WD Ready-to-Run Monster Truck, available in blue, offers a compact platform for off-road bashing. Equipped with a MEGA 380 brushed motor, 4WD system, and dBoots FORTRESS tires, this RC monster truck excels on various terrains, including dirt, grass, and pavement. Its small scale and included battery and charger make it a convenient choice for hobbyists seeking a durable remote control monster truck for casual or competitive use.

Performance

The Granite GROM’s MEGA 380 brushed motor delivers sufficient power for speeds up to 20 mph on smooth surfaces, suitable for small-scale bashing. The 4WD system with metal gears ensures reliable traction on dirt or pavement, though taller grass can challenge its low ground clearance. Oil-filled shocks and independent suspension provide stable handling over small jumps, but some feedback indicates plastic differentials may wear quickly under heavy use, requiring upgrades for extended durability.

Build Quality

The composite chassis and impact-absorbing bumpers offer resilience during rough play, while the enclosed drivetrain protects against debris. Metal gears in the transmission and Spektrum SX110 servo enhance longevity, though the plastic servo saver may break under stress, as noted in user feedback. Waterproof electronics, including the ESC and receiver, allow operation in wet conditions, but heavy water exposure should be avoided to prevent corrosion. Upgrade parts, like metal differentials, are available for improved strength.

Control

The Spektrum SLT2 2.4GHz transmitter provides a control range of about 100 meters with adjustable throttle and steering limits (50% or 75%), aiding beginners in learning control. The waterproof SX110 servo offers precise steering, though some reports mention occasional servo noise or failure after prolonged use. The lack of a wheel hex tool in the package can complicate initial setup or maintenance, requiring additional tools for adjustments.

Design and Features

The blue Granite GROM body features a clipless design for easy battery access and a rugged monster truck aesthetic with no specific real-world replica. The 7.4V 1400mAh 2S LiPo battery provides around 30 minutes of runtime, with a 1-hour charge via the included USB-C charger. The dBoots FORTRESS tires ensure grip, but the absence of LED lights limits nighttime visibility. The compact size (337 x 172 x 108 mm) suits indoor or outdoor use, though the sparse manual may require additional research for setup.

Special Notes: This is a Ready-to-Run model, fully assembled with a pre-painted blue body, 7.4V 1400mAh LiPo battery, USB-C charger, and 4 AA transmitter batteries included. No additional purchases are needed. Suitable for beginners with adjustable controls, but experienced users can upgrade parts like differentials for enhanced performance.

Specs & Features

• Scale: 1/18, generic monster truck design.
• Motor: MEGA 380 brushed motor for reliable power.
• Drive System: 4WD with metal gears, enclosed drivetrain.
• Battery: 7.4V 1400mAh 2S LiPo, ~30-minute runtime, USB-C charger.
• Transmitter: Spektrum SLT2 2.4GHz, ~100m range, 4 AA batteries included.
• Speed: Up to 20 mph on smooth surfaces.
• Tires: dBoots FORTRESS monster truck tires for all-terrain grip.
• Suspension: Independent with oil-filled, coil-over shocks.
• Body: Pre-painted blue with a clipless mount.
• Features: Waterproof SLT 2-in-1 25A ESC/receiver, SX110 metal-geared servo.