Overview
The ARRMA 1/8 KRATON 6S V6 4X4 BLX Speed Monster Truck RTR represents the ultimate evolution in brushless RC monster truck performance. This ready-to-run RC car UK enthusiasts have been waiting for combines legendary ARRMA toughness with cutting-edge speed technology, delivering 65+ mph real-world performance from the moment you unbox it. Whether you're a seasoned RC hobbyist or stepping up to your first serious brushless RC truck, the KRATON 6S V6 offers uncompromising performance wrapped in an iconic, aggressive monster truck design that turns heads at the track or your local bashing spot.
The latest generation KRATON 6S BLX 4X4 has been completely reimagined with extensive EXB (Extreme Bash) upgrades throughout its chassis, drivetrain, and suspension. Every component has been engineered and reinforced to handle brutal bashing, massive air, and unforgiving terrain without compromise. From the black-anodised 7075 T6 aluminium chassis plate to the heavy-duty 29mm differentials, this truck is built to survive the punishment that separates weekend warriors from genuine off-road RC enthusiasts. The complete Spektrum brushless system—featuring the Firma 150A Smart V2 ESC with updated B5.12 firmware, the high-powered 4074 2050Kv brushless motor, and a responsive S665 digital servo—delivers instantaneous acceleration and precision control at extreme speeds.
What makes the KRATON 6S V6 particularly special is its dual-battery compatibility. Start with a manageable 4S LiPo setup for controlled, learner-friendly performance, then unlock extreme power by plugging in a 6S battery when you're ready. The intelligent Spektrum SLT3 transmitter even includes a throttle limiter function, allowing you to set maximum speed to 50% or 75% until you've developed complete confidence managing 6S acceleration and top speed. This progression pathway makes the KRATON 6S an investment that grows with your skills, not a machine you'll outgrow in a season.
Key Features
- EXB (Extreme Bash) Reinforced Chassis — The 7075 T6 aluminium chassis plate represents the pinnacle of ARRMA's bash engineering, incorporating proven strength upgrades while maintaining lightweight performance characteristics. This means your truck can land from massive jumps, carve through rocky terrain, and absorb high-speed crashes without frame bending or structural failure, saving you money on repairs and keeping you racing.
- Heavy-Duty 29mm Limited-Slip Differentials — These EXB-upgraded differentials improve traction control on loose, slippery, or uneven surfaces by intelligently distributing power between wheels. On rough terrain or during aggressive cornering at speed, this means more predictable handling, fewer spinouts, and the ability to maintain momentum through challenging sections that would strand less capable trucks.
- Spektrum Firma 150A Smart V2 ESC with B5.12 Firmware — The ESC (electronic speed control) is the brain of your truck's acceleration and braking, and this Firma 150A unit delivers more power than previous generations thanks to updated firmware. It intelligently manages power delivery, protects your LiPo battery from over-discharge, and provides smooth, progressive throttle response whether you're creeping through technical sections or hammering the throttle at full speed.
- Spektrum Firma 4074 2050Kv Brushless Motor — This high-performance brushless motor eliminates carbon brushes and commutators entirely, meaning zero maintenance intervals, superior efficiency, and explosive acceleration. The 2050Kv rating combined with the 150A ESC creates a power delivery system capable of sustaining 65+ mph in real-world conditions, making this one of the quickest ready-to-run RC monster trucks available.
- 35mm Motor Cooling Fan — Integrated directly into the motor assembly, this active cooling system keeps temperatures within optimal ranges during extended bashing sessions. Better cooling means longer runtime from your batteries, more consistent performance as the motor warms up, and extended motor lifespan—a significant advantage over air-cooled alternatives.
- Waterproof Electronics — Both the Firma 150A ESC and S665 servo are factory-waterproofed to resistance standards that let you bash without worry in wet grass, shallow water, mud, and snow. This expands your racing calendar year-round and opens terrain options that would destroy standard electronics, giving UK RC enthusiasts the freedom to use their trucks in genuine all-weather conditions.
- Iconic Clipless Quick-Release Body System — The KRATON's famous monster truck body is secured with a revolutionary clipless system that releases in seconds, with no separate clips to lose. The retention system also doubles as impact protection against body punch-through during hard crashes, combining convenience with practical durability.
- Composite Side Guards and Enhanced Protection — Taller composite side guards shield the chassis and drivetrain from dirt, rocks, and debris thrown up by wheels during high-speed bashing, reducing maintenance requirements and protecting vulnerable linkages. The improved front bumper, stainless steel skid plate, and EXB wing mount extend protection to vulnerable areas where impacts are most likely.
- Two-Piece Tower-to-Tower Brace and Inner Body Tower — These structural upgrades increase chassis rigidity without adding significant weight, reducing flex during aggressive acceleration and cornering. The modular design also simplifies maintenance, letting you access servo and electronics without complete disassembly.
- Spektrum SLT3 2.4GHz Transmitter with Throttle Limiter — This high-quality three-channel transmitter is optimised for drivers of all experience levels and includes a revolutionary throttle limiting switch that automatically restricts maximum speed to 50% or 75% of full power. This feature transforms the KRATON 6S from an intimidating speed machine into a learner-friendly platform, giving you the confidence to progress into 6S power safely and systematically.
- S665 High-Torque Waterproof Digital Servo — Rated at 20kg of steering torque, this metal-geared digital servo delivers precise, responsive steering even at extreme speeds when gyroscopic effects and aerodynamic forces demand quick directional corrections. The waterproof design means mud, water, and humidity won't degrade performance or cause sudden failure.
- Adjustable 16mm Oil-Filled Coil-Over Shocks — Mounted on black-anodised aluminium shock towers, these performance shocks feature adjustable ride height for terrain-specific setup. Oil damping provides smooth, controlled compression and rebound across varied terrain, while the independent suspension geometry lets wheels track independently for maximum ground contact and traction.
- dBoots Copperhead Tyres on Multi-Spoke Wheels — The Copperhead tread pattern is specifically designed for aggressive off-road performance with biting edges for loose terrain and a robust structure that resists punctures and sidewall damage. Mounted on strong multi-split-spoke wheels (14.84 inches wide), this tyre package delivers the grip required for controlled high-speed running on asphalt, dirt, gravel, and short grass.
- Ready-to-Run RTR Configuration — Everything needed to unbox and bash is included: assembled truck, complete Spektrum radio system, transmitter batteries, and hand tools. Only a compatible LiPo battery and charger are required to begin, making this the perfect ready-to-run RC for UK buyers who want to skip assembly and start having fun immediately.
- IC5 Connector System — All electrical connections use Spektrum's IC5 connectors, which offer superior contact reliability, lower resistance, and faster, more secure connections than older XT60 or Deans connectors. This standardised system means easy battery swapping and compatibility with a wide range of Spektrum-equipped RC vehicles.
- 2-Year Limited Manufacturer Warranty — ARRMA backs this truck with comprehensive two-year coverage, reflecting their confidence in build quality and providing peace of mind for your investment.
Technical Performance
The ARRMA KRATON 6S V6 4X4 BLX represents a masterclass in modern off-road RC truck engineering. At 1/8 scale with a length of 596mm, width of 466mm, and height of 216mm, the KRATON delivers genuine monster truck proportions with a dry weight of 5.61kg (12.37 lbs) that balances mass for durability against lightness for performance. The brushless drivetrain at the heart of this machine comprises the Spektrum Firma 4074 2050Kv motor paired with the Firma 150A Smart V2 6S ESC, a combination that generates enough sustained power for verified 65+ mph top speeds in real-world conditions. This places the KRATON 6S among the fastest production-ready RC monster trucks available to the UK market. The motor's 2050Kv rating, combined with the truck's gearing and 14.84-inch wheel package, delivers exceptional acceleration and high-end velocity whilst maintaining drivability across the full throttle range. Battery compatibility spans 4S and 6S LiPo packs with a minimum specification of 5000mAh capacity and 50C discharge rating, providing flexibility for drivers transitioning from manageable 4S power (approximately 22.2V nominal) to extreme 6S performance (approximately 22.2V nominal). The independent suspension with adjustable 16mm oil-filled shocks mounted on aluminium towers provides sophisticated bump absorption and handling compliance across rough terrain, whilst the EXB-upgraded 29mm differentials ensure power is intelligently distributed to maintain traction even on slippery surfaces. Waterproof electronics throughout mean the truck handles wet grass, mud, snow, and temporary water crossings without electronic degradation, whilst the stainless steel skid plate and composite side guards protect vulnerable drivetrain components from impact and abrasion damage during aggressive bashing. The complete Spektrum system—including the dual-protocol SR315 receiver and SLT3 transmitter—operates on the proven 2.4GHz DSMR (Distributed Spectrum Modulation Response) platform, offering range in excess of 100 metres with crystal-clear signal integrity even in populated areas with numerous wireless devices.
What's in the Box
- KRATON 6S BLX 4X4 1/8 Scale Speed Monster Truck RTR (completely assembled)
- Spektrum Firma 150A Smart V2 Brushless 6S ESC with updated B5.12 firmware and IC5 connectors
- Spektrum Firma 4074 2050Kv Brushless Motor with 35mm cooling fan
- Spektrum SLT3 2.4GHz three-channel transmitter with throttle limiter function
- Spektrum SR315 DSMR three-channel dual protocol sport receiver
- Spektrum S665 20kg waterproof metal-geared digital servo
- 25T spline aluminium servo horn
- Four AA alkaline transmitter batteries
- Moulded hand tools for basic field maintenance and adjustment
- Comprehensive multilingual instruction manual with exploded parts diagrams
What You Need to Complete
- One compatible 6S hardcase LiPo battery (5000mAh minimum capacity, 50C discharge rating recommended) for extreme 6S performance, or four compatible 2S or 3S batteries wired in series configuration, or one compatible 4S battery for learner-friendly 4S performance
- Compatible LiPo balance charger capable of charging your selected battery configuration with IC5 connector compatibility
- Optional: LiPo charging safety bag (fireproof) for safe battery charging and storage
Frequently Asked Questions
- Is the ARRMA KRATON 6S V6 suitable for beginners? — Yes, with important caveats. The truck includes a throttle limiter function on the SLT3 transmitter that restricts maximum speed to 50% or 75%, allowing complete beginners to learn control skills with a 4S battery before progressing to 6S power. However, the truck's raw potential and speed capability mean it demands respect and open space—this isn't suitable for confined areas or young children without supervision. If you're entirely new to RC, starting with a 4S setup in an open field is essential.
- What battery does the KRATON 6S V6 need, and what's the difference between 4S and 6S? — The truck is compatible with 4S (14.8V nominal) and 6S (22.2V nominal) LiPo batteries with a minimum 5000mAh capacity and 50C discharge rating. A 4S battery delivers fun, manageable performance suitable for learning and bashing around fields, producing approximately 45 mph. A 6S battery nearly doubles the voltage to the motor and ESC, unlocking the full 65+ mph capability with dramatically improved acceleration. The throttle limiter lets you progress safely from 4S confidence to 6S extremes.
- How fast does the KRATON 6S V6 actually go? — ARRMA claims verified 65+ mph top speed with a 6S LiPo battery on suitable terrain. Real-world speeds vary based on terrain (asphalt produces higher speeds than grass), battery condition, and running-in of drivetrain components. With a 4S battery, expect approximately 45 mph. These are among the fastest production-ready RC monster trucks available in the UK market.
- What makes the EXB (Extreme Bash) upgrades worthwhile? — EXB components include the 7075 T6 aluminium chassis plate, 29mm differentials, front bumper, stainless steel skid plate, and wing mount—all reinforced specifically for surviving high-speed crashes, massive jumps, and hard bashing. These upgrades dramatically reduce repair costs over time by preventing common failure points like bent chassis plates, broken differentials, and damaged wings that plague less robust trucks.
- Is the KRATON 6S V6 waterproof? — The electronics (ESC and servo) are waterproof to standards allowing operation in wet grass, mud, shallow water, and snow without electrical failure. However, some mechanical components and connectors aren't fully sealed, so extended submersion isn't recommended. For water crossings and wet terrain bashing, the truck performs reliably; for deep water or sand with saltwater, additional protection may be advisable.
- What's included in the radio system, and is it upgradeable? — The Spektrum SLT3 transmitter and SR315 receiver provide three-channel control with 2.4GHz DSMR technology. The system is compatible with other Spektrum receivers if you want to upgrade later, but the included setup is fully functional and appropriate for this truck's performance level. The throttle limiter function is exclusive to the SLT3 and particularly valuable for progression into 6S speeds.
- How much assembly is required out of the box? — The KRATON 6S V6 ships completely assembled and ready-to-run (RTR). You simply charge a compatible battery, insert four AA batteries in the transmitter, bind the receiver to the transmitter following included instructions, and you're ready to bash. Only a LiPo battery and charger need to be purchased separately.
- What's the difference between the KRATON 6S V6 and previous KRATON models? — The V6 iteration incorporates extensive EXB upgrades to the chassis plate, differentials, front bumper, skid plate, and wing mount for increased durability. The Firma 150A ESC includes updated B5.12 firmware for improved power delivery. New side guards, a two-piece tower-to-tower brace, and inner body tower increase structural rigidity and simplify maintenance. The iconic KRATON body now features a clipless quick-release retention system and comes in four striking multi-colour finishes. These refinements elevate durability and user experience across the board.
- Can I upgrade components on the KRATON 6S V6? — Yes, ARRMA publishes an extensive parts catalogue with replacement and optional upgrade components available through RC Model Shop and authorised retailers. The modular design allows servo upgrades, shock tuning, tyre changes, and performance tweaks without major modifications. However, the truck is highly optimised from the factory and suitable for immediate bashing without modifications.
- What terrain is the KRATON 6S V6 best suited for? — The independent suspension and adjustable shock ride height make the KRATON equally at home on asphalt, dirt, gravel, short grass, and mixed terrain. Set up ramps or jumps in dirt and the truck's robust structure handles big air reliably. The waterproof electronics even permit wet grass and muddy conditions. Avoid deep water, sustained sand running, or saltwater environments.
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 KRATON 6S V6 4X4 BLX Speed Monster Truck RTR Blue/Red C-ARA8608V6T4 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
Steering Assembly
Chassis Assembly
Electronics
Rear Assembly
Front & Rear Differential Assembly
Centre Differential Assembly
Shock Absorber Assembly
Bodyshell / Clipless System / Wing / Wheel & Tyre
