The KRATON 4S BLX RTR offers ARRMA speed and strength in the ideal size for any monster truck basher — with a center diff for the ultimate grip, an updated Spektrum brushless system for more punch, added dirt protection, and two fresh color choices.
In The Box
- (1) ARRMA KRATON 4S BLX 4WD 1/10 Scale Speed Monster Truck RTR
- (1) Spektrum Firma 120A V2 Smart Waterproof* ESC
- (1) Spektrum Firma 3668 2400Kv Brushless Motor
- (1) Spektrum S662 Metal-Geared Waterproof* Digital Servo
- (1) Spektrum 2.4GHz SLT3 Transmitter & SR315 Receiver
- (4) AA Batteries
- (1) Instruction Manual
- *For details on waterproof standards, please refer to the instruction manuals.
Needed to Complete
- (2) 2S, (1) 3S, or (1) 4S Hardcase LiPo Battery
- (1) Compatible Charger
- Improved traction from an aluminum-cased center differential
- Updated 4S LiPo capable Spektrum brushless power system
- Additional dirt protection for even more toughness
- Updated chassis with center diff module, hinge pin bracing, and dirt drain
- Higher torque Spektrum S662 metal-geared digital servo with alloy case center
Key improvements:
- Metal center differential for increased traction
- Updated chassis with center diff module, hinge pin bracing, and dirt drain
- Outdrive protectors, taller side guards, and wishbone dirt guards
- Higher torque Spektrum S662 metal-geared digital servo with alloy case center
- Cooler running Spektrum Firma 120A V2 Smart ESC
- Improved battery retention system with wire clips
Additional proven features:
- Fully assembled, finished, and ready-to-run
- Spektrum SLT3 2.4GHz transmitter and dual protocol SR315 receiver
- Spektrum Firma 3668 2400Kv brushless motor with ARRMA heatsink and cooling fan
- EXB all-metal gear diffs
- EXB CVD front and rear driveshafts
- Wide 17.72 inch front and rear track for aggressive bashing
- Long 21.54 inch chassis and 13.98 inch wheelbase for stable handling
- Rubber shielded bearings throughout
- Center support brace for maximum durability
- Double wishbone front and rear suspension
- Oil-filled aluminum shocks with silicone O-rings
- High shock towers for longer travel
- Steering system with stone clearance
- Tough black multi-spoke wheels
- CNC machined, red anodized 17mm wheel hubs
- Multi-terrain dBoots COPPERHEAD 2 LP vented low-profile tires
- Adjustable turnbuckles
- Adjustable ride height
- Adjustable body mounts
- Front bumper and protective lower front and rear skid plates
- Wheelie bar with rubber tires
- 2-Year limited warranty (see website for details)
METAL CENTER DIFFERENTIAL
All-metal EXB gear diffs give the KRATON 4S BLX Speed Monster Truck EXtreme Bash durability. An aluminum-cased center differential has also been added that provides the ultimate traction in any surface conditions.
MODULAR CHASSIS DESIGN
Separate, easily removable chassis modules for the power system, electronics and differential components make routine maintenance fast and simple. The KRATON 4S BLX chassis has been updated to accept a center diff module, and also now includes hinge pin bracing and a dirt drain.
OIL-FILLED SHOCKS
Long, aluminum-bodied, oil-filled shocks with silicone O-rings are mounted on high shock towers. These plus wide suspension arms give the KRATON 4S BLX the plush suspension travel needed to soak up bumps.
INCREASED DIRT PROTECTION
With dirt guards for the wishbones, outdrive protectors, and taller side guards all added for extra protection against the elements, the KRATON 4S BLX is more prepared than ever for high-speed, all-road blasting.
dBOOTS COPPERHEAD 2 LP TIRES
The dBoots COPPERHEAD 2 LP tires are vented to disperse water for improved durability. Their multi-surface, chunky tread pattern delivers awesome traction on a wide range of surfaces. The tires are mounted on tough, 3.8” MT black multi-spoke wheels with CNC-machined, red-anodized 17mm hubs.
FINISHED TRUCK BODY
The sleek truck body features a tough, injection-molded rear wing and comes factory-finished in your choice of two exciting color schemes. Front and rear bumpers protect against impacts and a wheelie bar with rubber tires provides stunt potential.
SPEKTRUM S662 STEERING SERVO
The installed Spektrum S662 digital, waterproof steering servo easily handles the demands of high-speed, all-road blasting with full metal gears and high torque (236 oz-in @ 7.4V). It also features an industry-standard 25T spline servo horn.
SPEKTRUM BRUSHLESS POWER SYSTEM
The brushless power system includes an efficient Spektrum Firma 2400Kv brushless motor matched to an updated, cool-running Spektrum Firma 120A Smart V2 waterproof ESC with IC5 connectors (also compatible with EC5 connectors). The KRATON 4S BLX can reach speeds of 55+ mph with a 4S LiPo battery and optional pinion gear, available separately.
SPEKTRUM SLT3 2.4GHz 3-CHANNEL TRANSMITTER
The included Spektrum SLT3 transmitter is ergonomically designed for fatigue-free bashing and has a foam wheel for precise fingertip control. Using the throttle limiting function, new RC drivers can limit top speed to 50% or 75% of the monster truck’s full potential until they’re ready to unleash it all.
SPEKTRUM SR315 3-CHANNEL DUAL PROTOCOL RECEIVER
Compatible with SLT and DSMR protocols, the included Spektrum SR315 3-channel receiver offers outstanding range and fast response rate. It’s also Smart telemetry compatible (in DSMR mode and using the Spektrum Dashboard app).
Product Specs
Approximate Assembly Time
No assembly required
Ball Bearings
Full Set, Rubber Shielded
Battery
Sold Separately
Body
Painted, decalled and trimmed
Brakes
Integral with ESC
Bushing Material
Metal
Charger
Sold Separately
Chassis
Molded composite
Completion Level
Ready-To-Run
Connector Type
IC5, EC5
Differential
2 Gear Diffs
Drive Type
Forward/Brake/Reverse
Drivetrain
4WD
Final Drive Ratio
12.48
Front Track
17.72" (450mm)
Gear Pitch
0.8 MOD
Internal Gear Ratio
2.85
LiPo Compatibility
4S, 3S
Max Battery Dimensions
6.14x2.01x1.89 in (156x51x48 mm)
Motor Size
3668-2400Kv
Motor Type
Brushless
Pinion
13T
Power System
4S
Power Type
Electric
Product Height
8.11" (206 mm)
Product Length
21.54" (547 mm)
Product Weight
9.26lbs (4.2kg)
Product Width
17.72" (450 mm)
Radio
Included
Rear Track
17.72" (450mm)
Receiver
Included
Scale
1/10
Sensored
No
Servos
Included
Shock Type
Aluminum body, oil-filled, coil-over springs
Speed Control
Included
Spur Gear
57T
Steering Type
2WS
Suspension
Independent
Technology
Smart, Dual Protocol RX (DSMR/SLT)
Tire Tread
dBoots
Top Speed
55+
Vehicle Size
Standard
Vehicle Type
Monster Truck
Water-Resistant
Yes
Wheel Hex Size
17mm
Wheelbase
13.98" (355 mm)