ARRMA 1/8 KRATON 6S BLX 4WD Brushless Speed Monster Truck


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Product Details

The ready-to-run ARRMA® KRATON™ 6S BLX 4WD Speed Monster Truck now comes equipped for even greater all-terrain, 1/8 scale bashing thrills — with a Spektrum™ SLT3™ 3-channel radio, SLT™/DSMR® dual protocol receiver, Smart ESC, stronger servo and more.

Key Features
  • Updated with Spektrum™ components and Smart compatible
  • 60+ MPH (97 km/h) speeds achievable in optimum conditions using a 6S LiPo battery and the include optional speed pinion gear
  • EXB compatible front brace
  • Large volume waterproof receiver box
  • Ready-to-run – just install a charged 4 cell or 6 cell LiPo battery of your choice
In The Box
  • ARRMA® KRATON™ 6S BLX 1/8 Speed Monster Truck 4WD RTR
  • Spektrum™ Firma™ 150A Smart 4S/6S ESC (installed)
  • Spektrum ™ Firma ™ 4074 2050Kv Brushless Motor with ARRMA® Heatsink (installed)
  • Spektrum ™ S652 Metal-Geared Digital Servo (installed)
  • Spektrum ™ SR315 3-Channel Dual Protocol Receiver (installed)
  • Spektrum ™ SLT3™ 2.4GHz 3-Channel Radio
Needed to Complete
  • 4S or 6S LiPo Battery
  • LiPo Compatible Charger
  • LiPo Charging Bag
  • (4) AA Batteries

ARRMA know what it takes to create ultra-fast and ultra-tough RC vehicles.

The KRATON 6S provides blistering 6S LiPo battery compatible speeds, and multi-terrain blasting strength, straight from the box.

Waterproof Spektrum electronics, teamed with race-ready tuning specifications, allow you to challenge new environments and smash your previous speed records with a 1/8 scale electric Speed Monster Truck that means business.


Materials: Strong composite for long-lasting durability and increased impact resistance in all conditions – Ultra-tough steel that can withstand the punishment of the most extreme bashing action – Lightweight red and black anodized aluminum for precision fit, reduced vehicle weight and cool ARRMA looks

Equipment: Spektrum 2050Kv 4074 brushless motor. Fast, reliable and ready to blast beyond your expectations – Spektrum Firma 150A 6S LiPo battery capable waterproof Smart electronic speed control, with built-in cooling fan and push-button settings for consistent power control and easy operation – Spektrum S652 steel geared steering servo with 19.08kg-cm (265oz-inch) of torque at 7.4v. Strong and durable steering control on all surfaces – Spektrum SLT3 2.4Ghz radio transmitter and SR315 dual-protocol three channel radio receiver for precision control and fast throttle response – High-traction multi-surface dBoots COPPERHEAD 2 tires and multi-spoke ARRMA nylon wheels for aggressive handling and cool looks in all conditions – 3mm thick black anodized chassis plate for tough performance and durability – 16mm anodized aluminum shock absorbers for agile handling and superior jump landings – Quick-release metal geared front, rear and middle differentials for race-spec ready handling and tuning – Aluminum chassis brace for increased toughness


Length: 23.39″ (594mm)

Height: 7.68″ (195mm)

Width: 18.15″ (461mm)

Weight: 10.67 lbs (4.85kg)


1 x KRATON 6S Speed Monster Truck – Red

1 x Spektrum Firma 4074 2050Kv Brushless Motor

1 x Spektrum Firma 150A Smart ESC with IC5 Battery Connectors

1 x Spektrum SLT3 2.4Ghz Transmitter

1 x Spektrum SR315 Dual-Protocol 3 Channel 2.4Ghz Receiver

1 x Spektrum S652 Steel Geared Steering Servo 19.08kg-cm (265oz-inch) at 7.4 volt

4 x Pre-glued Copperhead 2 dBoots Tires



2 x 2S, 2 x 3S, 4S or 6S LiPo battery

Suitable battery charger

LiPo charging bag

4 x AA Batteries for transmitter

Product Specifications


Approximate Assembly Time No assembly required
Ball Bearings Full set
Battery Sold Separately
Body Painted, decaled and trimmed
Brakes User programmable
Charger Sold Separately
Chassis 0.12″ (3mm) 6061-T6 aluminum
Completion Level Ready-To-Run
Differential 3-gear
Drivetrain 4WD
Drive Type Forward/Brake/Reverse
Final Drive Ratio 17.92
Front Shock Spring Rate 6.2lbs/in (1.09N/mm)
Front Track 18.15″ (461mm)
Power Type Electric
Gear Pitch 1.0MOD
Ground Clearance 1.85″ (47mm)
Inner Tire / Outer Wheel Diameter 3.8 in
Internal Gear Ratio 4.3
Keywords ARRMA Firma RTR
Motor Size 4074
Motor Type Brushless – Sensorless
Pinion 12T
Product Height 7.68″ (195 mm)
Product Length 23.39″ (594 mm)
Product Weight 10.67lb (4.85kg)
Product Width 18.15″ (461 mm)
Radio Included
Rear Shock Spring Rate 5.0lbs/in (0.87N/mm)
Rear Track 18.15″ (461mm)
Receiver Included
Scale 1/8
Servos Included
Shock Type Aluminum body oil-filled adjustable
Speed Control Included
Spur Gear 50T
Suspension Independent
Tire Tread dBoots COPPERHEAD 2
Tire Type Multi-terrain
Vehicle Type Monster Truck
Water-Resistant Yes
Wheelbase 14.84″ (377mm)
Wheel Hex Size 17mm
Wheel Type Five split-spoke monster truck
Wheel Width 3.3″ (81.5mm)
SKU: ARA8608V5T2 Category:



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