Arrma Kraton 4S V2 BLX 1:10 4WD RTR black

Longer chassis

For this new version of the KRATON ® 4X4 4S BLX Speed Monster Truck, ARRMA ® engineers extended the model to 54.7 cm – 2 cm longer than the previous generation – to increase stability.

Wider gauge

To handle the more aggressive performance, front and rear track has been increased with longer arms to 45cm – 5cm more than the previous model.

Maximum durability

Features that contribute to the high durability of the Arrma 4X4 4S BLX chassis include a stronger composite chassis, front and rear skid plates, heavy-duty servo-saver steering, friction clutch and ball bearings throughout the drivetrain. Raised sides of the chassis limit the penetration of dirt into the model. The front and rear bumpers effectively absorb impacts.

Modular concept

The entire model is designed so that servicing is as simple as possible and each component can be easily dismantled in a short time. The regulator, servo control and receiver box with the receiver itself are easily accessible.

Big Bore Oil Dampers

The longer aluminum bodied shocks are oil filled and are installed on taller shock towers. This ensures efficient absorption even of hard impacts.

Wheels and tires

High-quality dBoots ® Copperhead 2 LP rubber tires are mounted on MT 3.8" wheels with aluminum nuts and 17 mm lugs.

Digital servo SPEKTRUM® S652

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• Servo SPEKTRUM® S652 with metal gears
  
• Waterproof*
  
• Torque 19.08 kg-cm @ 7.4V.
  
• 32% more torque and 5% faster than ADS-15M servo
  

AC regulator SPEKTRUM™ FIRMA™ 120A SMART 3S-4S

The control of the model is provided by a modern SPEKTRUM™ FIRMA™ 120A SMART controller with a 32-bit ARM Cortex M4 microcontroller, which is able to capture complete telemetry and transmit it to the receiver using an integrated wire in the new IC5 connector. Data is transmitted via the SRXL2 protocol. The controller reads information about the type, temperature and voltage of the battery cells directly from the Smart battery. Current, temperature, total Smart battery voltage, Smart battery cell voltage, battery temperature, remaining capacity and engine speed are available in real time.

The electronics are completely encased in a special potting material that prevents moisture* or dirt from entering the electronics. The regulator is switched on and adjusted with the buttons that are under the rubber cover.

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• The controller contains a fast and powerful 32-bit ARM M4 processor
  
• The regulator is waterproof*
  
• Overcurrent protection, thermal protection, failsafe
  
• Automatic LiPol disconnection at low voltage
  
• Robust plastic housing, aluminum heatsink with fan for high efficiency
  
• Adjustable high performance BEC
  
• Heavy duty IC5™ connectors, compatible with EC5™ connectors
  

AC motor

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• Motor Spektrum Firma 3668-2400kv
  
• Power supply 2-4S LiPol
  
• Aluminum shell with black anodizing and engraved Spektrum logo
  
• 4-pole rotor design
  
• The shaft with a diameter of 5 mm made of alloy steel is stored in ball bearings
  
• The motor is factory-fitted with 4 mm gold-plated connectors for a reliable connection
  
• The groove at the end of the motor shaft allows for secure mounting of the pinion
  

Spektrum SR315 DSMR Sport

The new generation SR315 DSMR Sport receiver in micro design weighs only 6g. Choice of SmartSafe™ or "Gas" Failsafe, push button pairing. DSMR technology ensures full range and fast response of the receiver.

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• Box design with rounded corners and light weight
  
• Thanks to the pairing button, you don't need a pairing connector
  
• SmartSafe™ Failsafe and "Gas Mode" available when paired
  
• Secure DSMR modulation protocol and high frame rate of 5.5ms
  
• Compatible with SMART telemetry, (compatible DMSR transmitter with SPEKTRUM dashboard application)
  

Spektrum SLT3 transmitter

The Spektrum SLT3 3-channel steering wheel transmitter operating in the 2.4 GHz band is compatible with the SLT protocol. The light weight of the Spektrum SLT3 transmitter allows you to hold it without fatigue. The steering wheel is covered with a foam rim for a firm grip. The layout of the controls is practical and intuitive - all controls are located so that they are quickly accessible when needed. A secure loop is provided for attachment to the strap.

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• Spektrum SLT 3-channel steering wheel RC kit for reliable control
  
• Proven construction for a comfortable grip without fatigue
  
• Possibilities to limit the maximum deviations of the control channel and throttle
  
• Dual control channel deflections and motor power limiter 50%, 75% and 100%
  
• You can use the third channel for additional devices, e.g. for sound modules.
  

Spektrum SMART technology

Spektrum Smart technology offers more information about the model, transmission of telemetry, easier operation and battery care. All SMART components, including batteries, are capable of communicating with each other and transmitting telemetry. To display complete telemetry, you must have a compatible Spektrum transmitter with a display. The display of telemetry depends on the type of radio for a specific model.

You can find more information about Smart technology in our blog . Overview of compatible transmitters here.

Recommended batteries

It is most suitable to use one LiPo drive battery with 3 or 4 cells (11.1 V, 14.8 V). In this case, you short-circuit the second input of the Y-cable with jumper IC5 (sold separately).

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• For regular riding, Spektrum 11.1 V 5000 mAh LiPo battery with Smart technology, or Spektrum G2 LiPo 11.1 V 5000 mAh with Smart G2 technology.
  
• Black Magic 11.1 V 5000 mAh LiPo battery for normal riding.
  
• For the maximum possible speed LiPo battery Spektrum 14.8 V 5000 mAh with Smart technology, or Spektrum G2 LiPo 14.8 V 5000 mAh with Smart G2 technology. The RC car can only be operated on flat surfaces, such as asphalt, concrete.
  
  

Spektrum batteries with Smart technology currently represent the most modern and safest way to maintain and charge batteries. The benefits of Spektrum Smart technology can be found here.

Smart G2 batteries are even simpler and safer, thanks to the absence of a balance connector. In addition, G2 batteries have up to 3x faster automatic discharge into storage mode. Smart G2 batteries can only be charged on Spektrum Smart and Smart G2 chargers.

Recommended chargers for conventional and Smart batteries

Spektrum Smart chargers can charge both Smart and Smart G2 batteries as well as conventional batteries. Previously sold Smart chargers, once updated, also support Smart G2.

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• Spektrum Smart S150 mains charger with one 50W output.
  
• Network charger Spektrum Smart S1100AC with one output 1x100W.
  
• Spektrum Smart S2100 mains charger with two outputs 2x 100 W.
  
  

To connect the battery to the chargers mentioned above, you need a reduction for charging IC5/IC3.

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• Spektrum Smart G2 S155 1x55W AC mains charger with one 55W output.
  
• Spektrum Smart G2 S1400 1x400W AC Single Output High Performance Mains Charger 400W .
  
• High performance mains charger Spektrum Smart G2 S2200 2x200W AC with two 2x200W outputs.
  

Accessories for normal operation

For the normal operation of the RC car, you need tire glue, screw glue, a tool kit and silicone shock oil. We recommend an affordable tool kit for RC cars from our range.

Tire glue is used to glue the tires to the disc rim. It is always necessary that the tire is firmly stuck to the wheel rim all the way around! If the tire is not glued all the way around, it may tear. Tire glue has a special composition that is able to glue materials such as rubber or nylon, and at the same time, after hardening, the glue is flexible. We recommend Robitronic Tire Glue from our offer - see recommended accessories.

Sometimes it is necessary to add silicone oil to the shock absorbers of the model and change the oil in the differentials. During normal operation, there are only slight leaks of silicone oil on the piston rods of the shock absorber. In the event that the surface of the damper pistons or the condition of the seals is in poor condition, the oil leakage may be large. Repair kits or individual parts are supplied for these cases. From our range of silicone oils, we recommend TLR (Team Losi Racing) silicone oils, see recommended accessories.

For routine maintenance, screw glue is needed. Screws screwed into the metal material (e.g. screws in the motor, set screw in the pinion) must be secured against loosening with this glue.

Protective covers for accumulators

Protective packaging is intended to limit the risk associated with the transport and charging of accumulators. LiPo accumulators can, while maintaining small dimensions and low weight, provide high discharge currents and have a large capacity for a long driving time. Conversely, the LiPo battery is especially susceptible to mechanical damage.