Overview
The ARRMA 1/8 MOJAVE 4S 4X4 BLX Desert Truck RTR in White represents the perfect balance between aggressive performance and reliable durability for RC enthusiasts across the UK. This ready to run RC car sits in a sweet spot between agile 3S bashers and massive 6S machines, offering the benefits of both platforms in one exceptional package. Whether you're a seasoned RC car UK competitor, a weekend basher, or discovering brushless RC trucks for the first time, the MOJAVE 4S delivers legendary ARRMA toughness combined with Spektrum brushless power that's capable of exceeding 50 mph under optimum conditions.
This isn't just another brushless RC truck — it's a purpose-built desert truck that comes completely assembled and ready to run straight from the box. The factory-finished scale desert truck body features authentic details including a detailed cockpit, roll cage and roof rails, giving it genuine off-road credibility. What truly sets this model apart is the introduction of a rugged centre differential to the ARRMA 4S BLX 4X4 platform, a feature that delivers awesome traction and handling that you simply won't find on comparable models. Combined with the heavy-duty composite chassis and EXB (EXtreme Bash)-enhanced transmission, this is a serious piece of RC engineering wrapped in stunning White livery.
The MOJAVE 4S BLX is engineered to excel across multiple surfaces and environments — from dedicated off-road tracks and dirt courses to grass, parking lots, and paved asphalt surfaces. This versatility means your investment works everywhere, not just on specialised terrain. Multiple layers of dirt and debris protection, including wishbone dirt guards, chassis dirt drains, outdrive guards and an inner protective body, ensure that your RC truck remains clean and performs consistently regardless of conditions.
Key Features
- 4S LiPo-Capable Spektrum Brushless Power System — The factory-installed Spektrum Firma 3668 2400Kv brushless motor delivers punchy acceleration and genuine performance, whilst the waterproof Spektrum Firma 120A Smart ESC is specifically rated for 3S and 4S LiPo batteries, giving you the flexibility to choose your power level based on your experience and local terrain.
- Rugged Centre Differential — New to the 4S BLX 4X4 platform, this centre diff is a game-changer for traction and handling, ensuring power is distributed intelligently to all four wheels and improving corner grip without sacrificing straight-line speed.
- EXB EXtreme Bash Enhanced Transmission — ARRMA has reinforced the critical stress points with EXB CVD front and rear driveshafts plus metal input and ring gears, making this transmission significantly more durable than standard offerings and capable of handling aggressive driving styles.
- Three-Differential All-Wheel Drive System — With differentials at the front, rear and centre, the 4WD drivetrain provides intelligent traction management, allowing each wheel to operate independently whilst maintaining cohesive handling and predictable behaviour.
- Waterproof Electronics Throughout — The Spektrum S652 metal-geared servo is waterproof and digital, the Firma 120A ESC is waterproof, and the SR315 receiver is fully integrated, meaning this ready to run RC truck is genuinely water-resistant and suitable for wet conditions.
- Front and Rear Double Wishbone Suspension — The independent suspension geometry is matched with oil-filled aluminium shocks mounted on tall shock towers, providing plush suspension travel and excellent bump absorption across rough terrain.
- Multi-Terrain dBoots FORTRESS LP Tyres — Vented to allow air circulation and water escape, these tyres feature a multi-surface tread pattern that delivers excellent grip whether you're on dirt, grass, asphalt or mixed terrain, with the venting helping extend tyre life.
- Comprehensive Dirt and Rock Protection — Wishbone dirt guards, chassis dirt drain, outdrive protectors, and most importantly an inner protective body work together to keep dirt, mud and debris away from critical internal components.
- Scale Desert Truck Realism — The finished body comes painted and decalled with a detailed scale interior featuring driver figures and interior details, plus realistic front and rear bumpers, scale skirt, protective grille and a wheelie bar for stunt potential.
- Spektrum 3-Channel 2.4GHz Radio System — The included SLT3 transmitter features adjustable throttle limiting for new drivers, allowing you to set power delivery at 50% or 75% until you're comfortable with full speed potential.
- Modular Design for Easy Maintenance — Separate, easily removable chassis modules for the power system, electronics and differential components make routine cleaning and repairs straightforward and quick, crucial for keeping your RC truck performing optimally.
- Rubber-Shielded Bearings Throughout — High-quality bearings with rubber shields provide durability and protection against dirt ingress, ensuring smooth operation and extended component lifespan even in challenging conditions.
- Adjustable Ride Height and Turnbuckles — The adjustable suspension geometry and turnbuckles allow you to fine-tune handling characteristics for your specific driving style and local track conditions.
- Front and Rear Swaybars — Anti-roll bars mounted both front and rear maximise stability during cornering and high-speed manoeuvres, reducing body roll and improving overall handling precision.
Technical Performance
The MOJAVE 4S BLX delivers genuine performance that belies its accessible price point. The Spektrum Firma 3668 2400Kv brushless motor is a proven platform that generates immense acceleration through the EXB-enhanced transmission featuring 0.8MOD 57T spur and 16T pinion gears with a 2.85:1 internal gear ratio. The Spektrum Firma 120A Smart waterproof ESC provides intelligent power management and is rated for both 3S and 4S LiPo batteries, meaning you can scale your power from 11.1V (3S) to 14.8V (4S) depending on your preference. The IC5 connector system (EC5 compatible) ensures secure power delivery and easy battery swaps. This combination delivers top speeds exceeding 50 mph under optimum conditions — more than enough for genuine adrenaline-fuelled RC action. The heavy-duty composite chassis is engineered from high-impact moulded composite materials with retained hinge pin plates, protective front and rear skid plates, and sliding gear mesh that reduces wear on critical drivetrain components. The four-wheel drive system distributes power through a three-differential setup (front, rear and centre) with each differential capable of intelligent traction distribution. The front and rear double wishbone suspension with oil-filled big bore aluminium shocks mounted on tall shock towers provides excellent travel and compliance across rough terrain, whilst the silicone O-rings on shocks ensure smooth operation. The 17mm aluminium wheel hexes and tough multi-spoke wheels are mounted with vented dBoots FORTRESS LP multi-terrain tyres that measure 2.4 inches in outer diameter. The overall dimensions place the MOJAVE at 638mm in length, 326mm in width and 242mm in height, delivering an impressive 14.96-inch wheelbase and 37mm ground clearance. Weighing in at 4.75kg, the truck strikes an excellent balance between durability and manoeuvrability. Waterproofing throughout — including the Spektrum S652 metal-geared digital servo rated at 16.7 kg-cm torque (232 oz-in at 6V) — ensures reliable operation in wet conditions, though you'll need to provide a LiPo battery pack (maximum dimensions 163 x 51 x 48mm, minimum 5000mAh at 35C) and compatible charger to get running.
What's in the Box
- (1) ARRMA 1/8 MOJAVE 4X4 4S BLX Desert Truck RTR fully assembled and pre-installed with all electronics
- (1) Spektrum SLT3 3-Channel 2.4GHz transmitter with adjustable throttle limiting for new drivers
- (1) Spektrum SR315 DSMR 3-Channel receiver (dual protocol, pre-installed)
- (1) Spektrum S652 metal-geared waterproof digital servo (16.7 kg-cm / 232 oz-in @ 6V, pre-installed)
- (1) Spektrum Firma 3668 2400Kv brushless motor with ARRMA heatsink and cooling fan (pre-installed)
- (1) Spektrum Firma 120A Smart waterproof 3S/4S ESC with IC5 connectors (EC5 compatible, pre-installed)
- (4) AA alkaline transmitter batteries
- (1) MOJAVE 4X4 4S V2 BLX Desert Truck RTR instruction manual (multilingual)
What You Need to Complete
- LiPo battery pack (either 2 x 2S, or 1 x 3S, or 1 x 4S hardcase configuration with EC5 or IC5 connector, maximum dimensions 163 x 51 x 48mm, minimum 5000mAh at 35C discharge rating) — sold separately
- Compatible LiPo battery charger — sold separately
- LiPo charging safety bag — recommended for safe storage and charging
Frequently Asked Questions
- Is the ARRMA MOJAVE 4S BLX suitable for beginner RC drivers? — Yes, absolutely. The included Spektrum SLT3 transmitter features adjustable throttle limiting that allows new drivers to set power delivery at 50% or 75% of maximum until they're confident with the full speed potential. The truck's stable suspension geometry, comprehensive dirt protection, and durable construction make it forgiving for learning, whilst the modular design means simple maintenance and repairs. This is genuinely a ready to run RC truck that's appropriate for both experienced and novice RC enthusiasts.
- What is the difference between 3S and 4S battery operation? — The MOJAVE 4S BLX is compatible with both 3S (11.1V) and 4S (14.8V) LiPo batteries. A 3S setup provides good performance and is more economical, whilst a 4S battery will deliver noticeably faster acceleration and higher top speeds, pushing closer to the 50+ mph maximum. For new drivers, starting with 3S is recommended to build confidence before upgrading to 4S power.
- How fast does the MOJAVE 4S BLX go? — Under optimum conditions, this brushless RC truck is capable of exceeding 50 mph with a 4S LiPo battery and the factory Spektrum Firma 2400Kv motor. Actual speed depends on battery capacity, driving surface, throttle management and setup tuning, but this is a genuinely quick machine that will deliver thrilling performance.
- What makes the centre differential special? — The newly introduced rugged centre differential to the ARRMA 4S BLX 4X4 platform is a significant upgrade that intelligently distributes power between the front and rear axles. This improves traction, especially during cornering and on mixed terrain, and provides more predictable handling characteristics than models without a centre diff. Combined with the front and rear differentials, the three-diff system is genuinely sophisticated for this vehicle class.
- Is this truck waterproof? — The MOJAVE 4S BLX is water-resistant, not fully waterproof. The Spektrum Firma ESC is waterproof, the SR315 receiver is sealed, and the S652 servo is waterproof, meaning electronics are protected. However, the composite chassis and internal components are not fully sealed. This means the truck can handle wet grass, light rain and water crossings, but shouldn't be submerged. Always dry the truck thoroughly after wet driving and allow electronics to dry completely before charging batteries.
- What battery specifications do I need to follow? — The MOJAVE 4S BLX accepts LiPo batteries in either 2S (two 2S packs), 3S, or 4S configuration. The maximum battery dimensions are 163 x 51 x 48mm (6.42 x 2.01 x 1.89 inches). The minimum recommended specification is 5000mAh capacity at 35C discharge rating, though higher capacity and discharge-rated packs will deliver improved performance and runtime. Batteries must feature EC5 or IC5 connectors to be compatible with the truck's electronics.
- How much assembly is required? — The MOJAVE 4S BLX is ready to run (RTR) and comes completely assembled with all major components pre-installed and tested. You'll simply need to install your LiPo battery, charge it, insert AA batteries in the transmitter, and you're ready to drive. The modular design means future maintenance and repairs are straightforward, but initial setup is minimal.
- What surfaces can I drive this truck on? — The multi-terrain dBoots FORTRESS LP tyres and the truck's suspension geometry make it genuinely versatile. You can drive on off-road tracks, dirt, grass, parking lots, paved surfaces and asphalt. The multiple dirt protection features (guards, drains, inner body) mean it remains clean regardless of terrain, and the comprehensive bearing shielding protects against dirt ingress.
- Can I upgrade the transmitter to a better Spektrum radio? — Yes. The Spektrum SR315 receiver is dual protocol compatible, meaning you can upgrade to any Spektrum DSMR transmitter. If you do, you'll also gain access to Smart telemetry capabilities through the Spektrum Dashboard mobile app, allowing real-time monitoring of ESC temperature, receiver voltage, battery voltage and motor RPM.
- How durable is the transmission? — The MOJAVE 4S BLX features ARRMA's EXB (EXtreme Bash) enhanced transmission with CVD front and rear driveshafts plus metal input and ring gears. This is significantly more durable than standard plastic transmission components and is specifically designed to handle the stresses of brushless power and aggressive driving. The modular chassis design means drivetrain components are easy to inspect, maintain and replace if needed.
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 1/8 MOJAVE 4S 4X4 BLX DT (with Centre Diff) RTR White C-ARA4404T1 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.
Parts Diagrams
Front Bumper Assembly
Front Assembly
Rear Assembly
Rear Bumper Assembly
Receiver Box Assembly
Chassis Assembly
Tranmission Assembly
Front and Rear Differential Assembly
Centre Differential Assembly
Shock Absorber Assembly
Roll Cage Assembly
Bodyshell / Cockpit / Wheels &Tyres
