Overview
The ARRMA 1/5 OUTCAST 8S 4X4 BLX EXB Stunt Truck RTR is the ultimate ready-to-run RC platform for bashing and performing eye-catching stunts. This is the biggest and best ARRMA ready-to-run basher to date, engineered with extreme strength and packed with high-performance Spektrum brushless electronics right out of the box. Whether you're an experienced RC enthusiast looking for a capable UK ready-to-run RC monster truck or someone seeking a platform that combines power with durability, the OUTCAST 8S EXB delivers uncompromising performance without requiring complex assembly or tuning.
Built for serious bashing and stunt action, this 1/5 scale RC truck features the revolutionary EXtreme Bash (EXB) design philosophy—a hardened engineering approach that utilises 7075-T6 aluminium components throughout to create a virtually unstoppable machine. The OUTCAST 8S EXB is not a toy; it's a purpose-built, competition-grade RC vehicle designed to handle the most demanding terrain and tricks that UK enthusiasts can throw at it. From asphalt to dirt and grass, this brushless RC truck maintains responsive handling and confident control regardless of the surface.
What sets this model apart in the ready-to-run RC market is its integrated Spektrum 8S LiPo-capable brushless system, featuring a mighty 5687 FIRMA 1100Kv motor with 56mm diameter and 10% more torque than its predecessor. Paired with Spektrum's advanced electronics and the included DX3 3-channel 2.4GHz DSMR radio system with AVC (Active Vehicle Control) technology, this is a complete, high-performance RC solution that arrives ready to drive. The truck reaches speeds in excess of 50mph and combines raw power with sophisticated stability control, making it an exceptional choice for UK RC enthusiasts who demand the best.
Key Features
- EXtreme Bash 7075-T6 Aluminium Construction — The chassis and critical structural components are machined from aerospace-grade 7075-T6 aluminium, laser-etched and CNC-finished to create exceptional rigidity and durability that withstands repeated high-impact bashing and extreme stunts that would damage conventional RC trucks.
- 5mm Thick EXB Laser-Etched Chassis Plate — This ultra-rigid foundation prevents flex and twisting under load, maintaining precision handling and alignment even during aggressive cornering and landing impacts, which directly improves steering response and consistency.
- EXB Red-Anodized CNC Aluminium Front Brace Mount — The front brace system incorporates impact-absorbing design principles to protect the vehicle during aggressive nose dives and front-end collisions whilst maintaining structural integrity for precise steering geometry.
- Spektrum FIRMA 5687 1100Kv Brushless Motor — This massive 56mm diameter motor delivers 10% more torque than the previous generation, providing exceptional acceleration and climbing power with improved thermal management to handle extended bashing sessions without overheating.
- Spektrum FIRMA 160A V2 Smart ESC — The latest generation electronic speed controller offers increased power delivery for more responsive throttle feel and punch, integrated smart telemetry capabilities, and advanced braking control for precision stunt execution and reliable reverse function.
- Spektrum S6510 Steel Gear Waterproof Servo — With 820 oz-in of torque at 8.4V (nearly 47% more muscle than previous models), this steel-geared servo provides rock-solid steering response and reliability during high-speed cornering and extreme manoeuvres without drooping or losing precision under load.
- Spektrum DX3 3-Channel 2.4GHz DSMR Radio System — The included transmitter features Spektrum's proven 2.4GHz DSMR frequency-hopping protocol for rock-solid signal integrity and genuine long-range control, whilst the SR6200A receiver integrates AVC technology for electronic stability and drift correction.
- Spektrum AVC (Active Vehicle Control) Technology — This intelligent stability control system automatically corrects roll and pitch tendencies during jumps, landings and aggressive cornering, allowing you to push the truck to its limits with confidence whilst maintaining control without throttle modulation.
- Big Block dBoots BACK-FLIP BB Tyres — These aggressive all-terrain tyres on multi-spoke wheels feature deep block treads for exceptional traction across asphalt, dirt, grass and mixed surfaces, with long-lasting compound and durable hubs that resist sidewall damage during extreme bashing.
- Oil-Filled Coil-Over 20mm Bore Shocks — The adjustable suspension features 6mm thick shock shafts mounted on ultra-thick composite towers, delivering plush tuning that absorbs brutal impacts and bumps whilst maintaining ride control and chassis stability throughout extended driving sessions.
- Heavy-Duty Four-Wheel Drive System — The 4WD drivetrain incorporates all-metal diff outdrives, gearbox internals, and durable steel driveshafts with a robust 9.06:1 internal gear ratio, providing reliable power delivery to all wheels and excellent traction across varied terrain.
- Easy-Access 3-Bolt Sliding Motor Mount — The driver-friendly motor mounting system allows rapid motor removal and installation for maintenance or upgrades, minimising downtime and keeping you on the track or field rather than spent on tedious mechanical work.
- Modular Electronics Module — The waterproof, moulded electronics housing incorporates integrated receiver box, servo mount and ESC tray, protecting all sensitive electronics from dirt and moisture whilst maintaining easy access for maintenance and battery swaps.
- Multi-Structured Centre Brace System — Combining rugged anodised 7075 T6 aluminium laser-etched chassis plates with strong composite side pods and integrated centre body support, this architecture maximises structural rigidity and longevity under sustained bashing.
- Wheelie Bar for Stunt Control — The integrated wheelie bar provides stability during aggressive acceleration and nose-up stunts, preventing excessive pitch angle and maintaining consistent landing geometry for repeatable performance and safety.
- Aggressive EXB Matte-and-Gloss Paint Scheme — The purposeful two-tone finish in black with contrasting gloss accents delivers a purposeful, no-nonsense aesthetic that matches the truck's engineering rather than frivolous graphics, making it unmistakably built for serious action.
- CNC Machined Aluminium 24mm Wheel Wrench — This precision-made tool allows quick wheel changes and adjustments without damaging soft wheel hubs, and doubles as a general maintenance tool for tightened fasteners and adjustments.
- Spektrum Smart Telemetry System — Download the free Spektrum Dashboard App to monitor motor RPM, ESC temperature, receiver voltage and drive pack voltage in real-time, allowing you to optimise performance and diagnose issues during tuning sessions.
- 2-Year Limited Warranty — ARRMA backs this truck with comprehensive warranty coverage, providing peace of mind and demonstrating manufacturer confidence in the product's durability and performance standards.
Technical Performance
The ARRMA OUTCAST 8S EXB represents the pinnacle of modern 1/5 scale RC truck engineering, combining raw power with sophisticated durability. The Spektrum FIRMA 5687 1100Kv brushless motor—measuring 56mm in diameter—pairs with the Spektrum FIRMA 160A V2 Smart ESC to deliver exceptional throttle response and acceleration that propels this truck to speeds exceeding 50mph. The motor's 10% torque increase over previous models translates to improved climbing ability and faster acceleration from standstill, whilst the 160A ESC provides sufficient current capacity to utilise the full potential of 8S LiPo batteries (rated up to 8S maximum). The servo system deserves particular mention: the Spektrum S6510 steel-geared servo delivers 820 oz-in of torque at 8.4V, representing a 47% increase in steering muscle compared to earlier models. This ensures that steering response remains crisp and precise even during high-speed cornering, and the steel gears resist stripping under the extreme loads encountered during stunt driving.
The chassis construction demonstrates ARRMA's commitment to durability. The 5mm thick 7075-T6 CNC aluminium laser-etched chassis plate serves as a rigid foundation, whilst the EXB red-anodized front brace mount adds crucial structural support to the steering linkage area. The suspension system features adjustable oil-filled 20mm bore shocks with 6mm thick shock shafts mounted on ultra-thick composite towers, enabling fine-tuning of ride height and damping whilst absorbing the brutal impacts inherent to high-performance bashing. The drivetrain incorporates all-metal diff outdrives and gearbox internals paired with durable steel driveshafts, ensuring reliability through sustained abuse. The 1.0 MOD 47T spur gear meshes with the internal drivetrain at a 9.06:1 ratio, optimising acceleration and top-end speed for this scale class. The big block dBoots BACK-FLIP BB tyres provide aggressive traction across asphalt, dirt and grass surfaces, whilst the multi-spoke wheels with durable hubs resist damage during sideways landings and extreme cornering forces. Ground clearance of 2.56 inches (65mm) combined with the wheelbase of 16.93 inches (430mm) enables the truck to clear obstacles and maintain stable flight characteristics during jumps. The vehicle's overall dimensions—28.11 inches long, 23.43 inches wide, and 12.01 inches tall—create an imposing presence and provide sufficient mass for momentum across rough terrain. With forward, brake and reverse drive capabilities, this truck offers the control precision necessary for stunt execution and recovery from dynamic situations.
What's in the Box
- 1x ARRMA 1/5 OUTCAST 8S EXtreme Bash Stunt Truck 4X4 RTR (fully assembled and ready to drive with included batteries)
- 1x Spektrum FIRMA 1100Kv brushless motor (5687 size, 56mm diameter)
- 1x Spektrum FIRMA 160A V2 Smart ESC (brushless speed controller)
- 1x Spektrum S6510 steel gear waterproof servo (820 oz-in torque)
- 1x Spektrum DX3 3-channel 2.4GHz DSMR radio transmitter
- 1x Spektrum SR6200A DSMR receiver with AVC technology
- 1x CNC machined aluminium 24mm wheel wrench
- 1x 1/5 OUTCAST 8S EXtreme Bash Stunt Truck Product Manual (multilingual)
- 4x AA batteries for transmitter operation
What You Need to Complete
- 2x 3S or 2x 4S LiPo batteries with EC5 or IC5 connector (8S-capable; battery selection determines voltage and performance characteristics)
- 1x Compatible LiPo battery charger with appropriate amperage rating for your chosen batteries
Frequently Asked Questions
- Is the ARRMA OUTCAST 8S EXB suitable for beginners or only experienced RC enthusiasts? — Whilst this is a ready-to-run truck requiring no assembly, it represents Skill Level 5 complexity and is optimised for experienced drivers who understand high-performance RC operation, battery safety and maintenance requirements. The raw power and speed demand respect and proper technique. Beginners considering this model should have prior RC experience and understand LiPo battery handling, charger operation and safe driving practices in open spaces.
- What battery does the ARRMA OUTCAST 8S EXB require? — This truck is compatible with either 2x 3S or 2x 4S LiPo batteries configured in series to deliver 8S voltage (29.6V nominal). You may also run 6S configuration with 2x 3S batteries. Batteries must feature EC5 or IC5 connectors for compatibility with the included Spektrum FIRMA 160A V2 ESC. Battery capacity influences runtime (typically 8,000-10,000mAh is recommended for extended sessions), and your chosen battery chemistry directly impacts acceleration, top speed and overall driving feel.
- What is the difference between the OUTCAST 8S EXB and standard OUTCAST models? — The EXB designation refers to the EXtreme Bash engineering philosophy, incorporating hardened 7075-T6 aluminium components throughout, thicker shock shafts, stronger suspension towers, and reinforced chassis bracing. The 8S EXB also features updated Spektrum FIRMA electronics with 10% more motor torque and 47% more servo torque compared to previous generations. The aggressive matte-and-gloss paint scheme and enhanced component robustness position this as the ultimate bashing variant for maximum durability.
- What is the top speed of this ready-to-run RC truck? — The OUTCAST 8S EXB is capable of speeds exceeding 50mph when configured with appropriate 8S LiPo batteries and running on smooth surfaces. Actual top speed varies depending on battery capacity, weight distribution, tyre grip, surface conditions and driving technique. Grass and dirt surfaces will naturally reduce maximum speed compared to asphalt.
- How long does the battery last on a single charge? — Runtime depends entirely on your chosen battery capacity and driving style. A typical 8,000mAh 4S battery will provide approximately 20-30 minutes of continuous aggressive driving, whilst conservative cruising may extend this to 45+ minutes. Battery capacity (measured in milliamp-hours or mAh) directly influences runtime; higher capacity batteries deliver longer sessions.
- Is this truck waterproof? — The truck features water-resistant design with a waterproof electronics module housing the receiver, servo mount and ESC, protecting sensitive electronics from splash and moisture. However, this is water-resistant rather than fully waterproof; submersion or heavy water exposure should be avoided. Light rain and splashes from puddles are acceptable, but the vehicle should not be dunked.
- What maintenance does the OUTCAST 8S EXB require? — ARRMA's modular design minimises maintenance time. Regular inspections of driveshafts, shock oil levels, tyre wear and battery connectors are recommended. The easy-access motor mount allows rapid cleaning, and the waterproof electronics module reduces water ingress concerns. After each session, inspect for debris in the diff modules and chassis, and allow the truck to cool before recharging batteries.
- Can I upgrade components on the OUTCAST 8S EXB? — Yes, ARRMA provides extensive optional and replacement parts compatibility. The modular design allows servo upgrades, differential tuning, suspension adjustments and drivetrain modifications. However, as a ready-to-run truck, the base configuration is optimised for performance out of the box.
- What radio frequency does the transmitter use? — The included Spektrum DX3 transmitter operates on 2.4GHz DSMR (Direct Sequence Modulation Radio) frequency with automatic frequency-hopping technology, providing rock-solid signal integrity and genuine long-range control without interference from other RC systems or WiFi devices.
- How much assembly is required? — This is a fully ready-to-run (RTR) vehicle requiring zero assembly. The truck arrives completely assembled with all electronics installed and calibrated, motor mounted, suspension adjusted and wheels installed. You simply need to add batteries and charge before driving—allowing you to begin bashing within minutes of unboxing.
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 1/5 OUTCAST 8S 4X4 BLX EXB Stunt Truck RTR Black C-ARA5810V2T1 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 Assembly
Servo Save & Receiver Box Assembly
Transmission Assembly
Chassis Assembly
Rear Assembly
Front & Rear Diff Assembly
Centre Diff Assembly
Shock Absorber Assembly
Bodyshell, Wheel & Tyre
