Overview
The ARRMA 1/16 MOJAVE GROM MEGA 4X4 DT is a compact yet capable ready-to-run RC desert truck that brings legendary ARRMA toughness to a small-scale package perfect for bashers of all skill levels. Measuring just 338mm in length with a weight of just 1.03kg, this is less than half the size of the full-scale MOJAVE 4S, yet it delivers genuine performance and durability without any compromises. Whether you're looking for an RC car UK enthusiasts can take anywhere or a first ready-to-run RC vehicle that won't break the bank, the MOJAVE GROM offers authentic Baja-style desert truck styling combined with genuine off-road capability.
Designed for both indoor and outdoor bashing, the MOJAVE GROM goes where larger RC desert trucks cannot venture. You can take this ready to run RC model to the park, to a local track, or even bash it around your garden with confidence. The Blue and White colour scheme captures the iconic MOJAVE styling that ARRMA is recognised for, making this small-scale desert truck a genuine head-turner on any surface. It's engineered to the same high standards as ARRMA's larger vehicles, with precision engineering, quality components and proven reliability throughout.
Off-road racing puts full-size desert trucks through brutal tests of performance and endurance, and this RTR RC desert truck is engineered to mirror that experience in miniature. With its detailed styling, responsive handling and toughness built into every component, the MOJAVE GROM delivers the thrills of Baja-style action at a fraction of the size and cost of larger models. Perfect for weekend bashers, competitive racers wanting a fun secondary model, or anyone discovering RC cars for the first time.
Key Features
- 4WD Shaft-Driven Drivetrain — The MOJAVE GROM features a complete 4-wheel drive system with shaft-driven power delivery to all four wheels, ensuring maximum traction across any terrain and allowing you to power through challenging surfaces with confidence.
- Updated V2 Differentials with Metal Gears — The new generation V2 differential system features metal internal gears and cross pins, dramatically improving power delivery and traction hunting compared to older plastic components, allowing the truck to grip and accelerate with genuine authority.
- Full Metal Gear Drivetrain — Every gear in the drivetrain is manufactured from metal rather than plastic, providing maximum durability and reliability even during extreme bashing sessions and rough terrain use.
- Spektrum Waterproof 2-in-1 ESC and Receiver — The integrated Spektrum 2625RX unit combines electronic speed control and radio receiver in one waterproof package, delivering smooth proportional control and go-anywhere performance in wet or dusty conditions.
- Powerful 28T MEGA 380 Brushed Motor — The compact yet torquey 380-size brushed motor with 28-tooth pinion delivers impressive acceleration and top speed capability of 20+ mph (32+ km/h), perfectly matched to the small scale chassis for thrilling yet controllable performance.
- Black Anodised Aluminium Cooling System — A fan-cooled heatsink mounted on the chassis keeps motor and ESC temperatures down during sustained running, extending component life and maintaining consistent performance throughout your bashing sessions.
- Spektrum SX110 Metal-Geared Servo — The waterproof servo features full metal gears throughout its construction, providing fast and powerful steering response with the durability needed for hard bashing and go-anywhere performance.
- Spektrum Smart 7.4V 1400mAh 2S LiPo Battery and Charger Included — The complete ready-to-run package includes a Spektrum Smart LiPo battery with integrated microchip temperature monitoring and a Spektrum S10 2S USB-C smart charger, allowing you to charge in an hour or less from any USB power source.
- Spektrum SLT2 Transmitter with Throttle Limiter — The included 2.4GHz radio system features 50% and 75% throttle limiters, making it easy to match speed to your skill level, whether you're learning the ropes or going full throttle.
- Precision Moulded Composite Chassis — The rugged composite chassis is engineered for go-anywhere toughness whilst remaining lightweight, providing excellent durability against impacts and rough terrain without excessive weight penalty.
- Clipless Body Mounting System — The iconic MOJAVE body attaches securely without clips or fasteners, allowing quick and tool-free removal for cleaning or maintenance after dusty bashing sessions.
- Full Hex Hardware — Every fastener uses quality hobby-grade hex head bolts rather than cross-head screws, providing superior reliability and allowing easy adjustment with the included 2mm driver and wheel wrench.
- Oil-Filled Coil-Over Shock Absorbers — The front and rear suspension features 800cSt silicone oil-filled shocks with coil-over springs that effectively soak up impacts and terrain variations, keeping the truck planted and controllable even over rough ground.
- dBoots FORTRESS Off-Road Tyres — The specially designed vented tyres provide ultimate traction and durability across multiple terrain types, paired with 65mm diameter wheels mounted on quality glued beads.
- Larger M4 Axles and Wheel Nuts — The axles and wheel retention hardware are 25% larger than traditional small-scale vehicles, providing more secure wheel fitting and allowing a wide range of aftermarket wheel and tyre options for customisation.
- Rubber-Shielded Ball Bearings — Unlike competitors, the MOJAVE GROM features a full set of shielded ball bearings throughout the drivetrain, delivering extreme smoothness and performance compared to plastic bushings.
- Impact-Absorbing Front Bumper — The carefully designed front bumper with integrated bumper loop helps the truck soak up the rough and tumble of hard bashing, protecting the chassis from serious impact damage during aggressive driving.
- ARRMA Tough Rear Bumper — The box-section rear bumper design provides extreme durability and protection during reverse impacts and tumbles, keeping the truck looking and performing great through countless bashing sessions.
- Integrated Cable Management — Wiring is carefully routed and secured using integrated management system, keeping everything neatly tucked away and maintaining the sharp appearance of your MOJAVE GROM.
- Indexed Motor Mount — The motor mount locks the motor securely into position while allowing rapid gear ratio changes with perfect mesh every time, enabling quick tuning without specialist tools.
- Secure Battery Mounting — The battery compartment is designed for absolute security during the roughest terrain, ensuring your power source stays connected and protected even during extreme bashing.
- Close-Fitting Body Shell Design — The aerodynamic bodywork sits closer to the chassis than competitors' products, keeping out mud, dust and water whilst maintaining the authentic MOJAVE styling.
Technical Performance
The MOJAVE GROM MEGA 4X4 DT delivers impressive performance from its compact package through careful engineering and quality component selection. The brushed motor system uses a 28T MEGA 380 brushed motor delivering 20+ mph (32+ km/h) top speed capability, paired with a 7.76:1 final gear ratio and 59-tooth spur gear driving through a 19-tooth pinion. This gearing is optimised for the 1/16 scale platform, providing excellent acceleration and mid-range torque through the shaft-driven 4WD drivetrain. The Spektrum 2625RX 2-in-1 ESC and receiver package delivers waterproof performance with smooth proportional control, whilst the integrated ESC keeps weight down and maintains the compact form factor. Power comes from the included Spektrum Smart 7.4V 1400mAh 2S LiPo battery with IC2 connector, which charges in an hour or less using the supplied Spektrum S10 2S USB-C smart charger. The battery features integrated temperature monitoring and unique parameter storage via microchip, ensuring safe and accurate charging every time. The upgraded V2 differentials with metal internal gears and 30T crown gear (0.8Mod specification) and 12T pinion gear provide superior traction management compared to plastic differential designs. The chassis measures 338mm long with a 196mm wheelbase, 120mm height, and 172mm front and rear track width, keeping the overall footprint compact whilst maintaining stability. Weight of just 1.03kg (2 lbs 4oz) including battery makes this one of the most portable ready-to-run RC models available. The Spektrum SX110 servo features full metal gearing with 20T spline and delivers powerful, fast response perfect for precise steering control. Suspension uses oil-filled coil-over shock absorbers with 0.45 N/mm spring rate front and rear, filled with 800cSt silicone oil, delivering excellent bump absorption and consistency. The aluminium heatsink with integral cooling fan keeps motor and ESC temperatures down during sustained running, extending component lifespan and maintaining consistent performance throughout your battery packs.
What's in the Box
- ARRMA MOJAVE GROM MEGA 4X4 Small Scale Desert Truck RTR chassis with Blue and White bodywork
- Spektrum 2625RX 2-in-1 Waterproof ESC and Receiver unit
- ARRMA MEGA 380 28T Brushed Motor
- Spektrum SLT2 2.4GHz Transmitter with 50% and 75% throttle limiters
- Spektrum SX110 Waterproof Metal-Geared Servo
- Spektrum Smart 7.4V 1400mAh 2S 30C Hard Case LiPo Battery with IC2 connector and integrated temperature monitor
- Spektrum S10 2S USB-C Smart Charger
- Four AA batteries for transmitter
- 2mm Hex driver and wheel wrench combination tool
- Instruction manual
What You Need to Complete
- USB power adapter with Quick Charge 2.0 or 3.0 supporting 18W or higher output (required for optimal charging performance, not included)
Frequently Asked Questions
- Is the ARRMA MOJAVE GROM suitable for beginners and first-time RC car buyers? — Yes, the MOJAVE GROM is specifically designed for bashers of all experience levels. The included Spektrum SLT2 transmitter features 50% and 75% throttle limiters, allowing you to match the truck's speed to your skill level. The compact size makes it easy to control indoors and outdoors, the ready-to-run format means no building required, and the brushed motor system provides forgiving, predictable performance without the complexity of brushless electronics. The included charger and battery make it ready to bash straight out of the box.
- What battery does the MOJAVE GROM need and how long does it run? — The truck comes with a Spektrum Smart 7.4V 1400mAh 2S LiPo battery (IC2 connector), which is the recommended power source. The 1400mAh capacity delivers long run times suitable for extended bashing sessions. The included Spektrum S10 2S USB-C smart charger can fully charge the battery in an hour or less, making it quick to get back to bashing. The smart charging technology ensures safe and accurate charging with automatic cut-off.
- What is the maximum speed of the MOJAVE GROM? — The 28T MEGA 380 brushed motor with optimised 7.76:1 gear ratio delivers a maximum speed of 20+ mph (32+ km/h), which is thrilling yet manageable for bashers of all skill levels. This speed is perfectly suited to the small scale, allowing high-energy driving without excessive risk during outdoor bashing.
- Is the MOJAVE GROM waterproof? — The electronics are waterproof, including the Spektrum 2625RX 2-in-1 ESC/Receiver and SX110 servo, allowing the truck to handle wet conditions and muddy terrain. However, the battery itself should be kept dry, and you should avoid submerging the truck in water. The waterproof components mean you can bash in rain or wet conditions without fear of electrical failure.
- How does the MOJAVE GROM compare to other small-scale RC desert trucks? — The MOJAVE GROM is significantly smaller than ARRMA's larger MOJAVE 4S and 6S models, making it portable and suitable for anywhere bashing, yet it features the same engineering principles and build quality standards. Unlike competitors' small-scale offerings, the MOJAVE GROM features full metal gear drivetrain, updated V2 differentials with metal gears, rubber-shielded ball bearings throughout, full hex hardware, and waterproof electronics as standard. The shaft-driven 4WD system with oil-filled differentials and coil-over shocks delivers genuine performance and handling rather than toy-like simplicity.
- What maintenance does the MOJAVE GROM require? — After dusty or muddy bashing, simply use the clipless body mounting system to remove the bodywork and allow the chassis to dry. The integrated cable management keeps wires neat and protected. The full metal drivetrain requires minimal maintenance compared to plastic alternatives, though periodic cleaning and occasional lubrication of the shaft drive and differential will keep everything running smoothly.
- Can I upgrade or modify the MOJAVE GROM? — Yes, ARRMA provides several upgrade options for the MOJAVE GROM including oil-filled differentials, adjustable steering links for quick toe-angle adjustment, metal axle and hex sets for extreme durability, and aluminium shock sets with threaded collars for easy preload adjustment. The indexed motor mount allows quick gear ratio changes, and the large M4 axles and wheel nuts accommodate a wide range of aftermarket wheels and tyres.
- What is the build quality like compared to other ready-to-run RC cars? — The MOJAVE GROM is engineered to the same high standards as ARRMA's larger models, with precision moulded composite chassis, full metal gears, waterproof electronics, and quality components throughout. No compromises were made when reducing the scale. The use of full hex hardware rather than cross-head screws, rubber-shielded ball bearings rather than plastic bushings, and metal servo gears throughout all indicate a commitment to durability and reliability that exceeds many competitors' offerings in the ready-to-run segment.
- Is this a good RC car for racing or just bashing? — Whilst the MOJAVE GROM is primarily designed as a basher due to its compact size and user-friendly throttle limiters, the quality components and precise handling make it capable of track use. The responsive servo, shaft-driven 4WD system, and oil-filled shocks deliver genuine performance and control. Many users enjoy racing these trucks informally, though the small scale naturally limits competitive options compared to larger 1/10 scale vehicles.
- What tools do I need to operate the MOJAVE GROM? — The truck comes with a 2mm hex driver and wheel wrench combination tool, which is sufficient for basic maintenance and wheel removal. No specialist tools are required for general bashing. If you plan to adjust suspension, change gear ratios, or perform detailed maintenance, you may want a small hobby toolkit, but this is optional for casual use.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the ARRMA 1/16 MOJAVE GROM MEGA 4X4 DT with Battery & Charger Blue C-ARA2104T2 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
