Traxxas X-Maxx 8S Monster Truck Green

Product no.: 39-77086-4GRNX

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Was $1,599.95
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Delivery weight: 60 kg
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Possible delivery method: Australia Wide


Unrelenting 4X4 power, mammoth size, and award-winning innovation make X-Maxx the ultimate monster truck. With 30+ volts of extreme 8S power, X-Maxx defies physics, unleashing jaw-dropping acceleration and 50+mph speeds. Engineered to conquer the most extreme terrain and take brutal real-world punishment in stride, X-Maxx is the definition of Traxxas Tough®.


At the end of the day, size always wins. X-Maxx plows over obstacles and muscles through extreme terrain that leaves lesser trucks stranded. Mammoth 8-inch tall tires, long-arm suspension, and huge ground clearance dwarf the surroundings for virtually unstoppable monster truck fun.


X-Maxx Power


At Traxxas, too much power is never enough! The durability of the new VXL-8s is matched only by the sheer ferocity of its 8s 30+ volt dual LiPo muscle. The speed-tuned 1200XL Big Block™ motor propels X-Maxx with brutal authority and exacting quickness that warps your senses. No matter what you have driven in the past, nothing will prepare you for X-Maxx.


X-Maxx Drivetrain


X-Maxx puts the power to the ground through tough all-steel drivetrain gears, the revolutionary Cush Drive system, and our strongest driveshafts ever. The all-new Torque-Biasing Center Drive improves driveline durability and drives larger module ring and pinion gears on the toughest differentials we have ever produced.


Truck Specs

  • Length:        30.67 inches (779mm)
  • Front Track: 22.26 inches (540mm)
  • Rear Track:  20.66 inches (525mm)
  • Ground Clearance: 4 inches (102mm)
  • Weight:        19.1lbs (8.66kg)
  • Height (ride):         13.79 inches (350mm)
  • Wheelbase:  18.92 inches (480mm)
  • Shock Length:       7.4 inches (187mm)
  • Tires (pre-glued):   8.0x4.0 inches (203mm)
  • Wheels:        4.3x5.7 inches (110x145mm)
  • Speed Control:       Velineon VXL-8s
  • Motor (electric):     Velineon 1200XL
  • Transmission:        Single-Speed
  • Overall Drive Ratio:         8.11 (stock, out-of-box)
  • Differential Type:  Sealed, Hardened Steel Bevel, Limited Slip
  • Gear Pitch:   1.0-Pitch
  • Chassis Structure/Material:         Composite Nylon Tub
  • Brake Type: Electronic
  • Drive System:        Shaft-Driven 4WD
  • Steering:      Bellcrank
  • Radio System:        TQi™ 2.4GHz Transmitter with TSM® receiver™
  • Servo:          Torque: 365oz. Speed: 0.17 sec/ 60 degrees(6.0V)
  • Top Speed:  50+ MPH with two 4s LiPo batteries and optional pinion gear
  • Skill Level:  6
  • Battery Tray:          197mm x 51.5mm x 44mm
  • Required Batteries: 4 “AA” (transmitter)

Motor Specs


  • Type: 1275 kv Sensorless Brushless
  • Weight:        665g (23.44oz)
  • Length:        4.32 inches (110mm)
  • Diameter:     1.88 inches (48mm)
  • Connector Type:    Traxxas 6.5mm Bullet Connectors

ESC Specs

Input Voltage:        4s/6s/8s LiPo (Max 33.6 Volts)

Case Size:    2.23in (58mm) / 2.83in (72mm) / 1.81in (46mm)

Weight:        215.5g (7.60oz)

BEC Voltage:         6.0 V

BEC Current Continuous:          10 A

BEC Current Peak: 20 A

Motor Connectors: Traxxas 6.5mm Bullet Connectors

Battery Connectors:         Traxxas High-Current Connectors

Power Wire: 10-gauge Maxx Cable

Ports: RX Input, Auxiliary Fan, Traxxas Accessory Port

Feature List

  • Velineon VXL-8s Brushless Power System
  • VXL-8s Waterproof Electronic Speed Control
  • 8s LiPo compatible
  • Built-in cooling fan
  • Real-time telemetry via Traxxas Link
  • Machined heat sinks
  • 10-gauge silicone wire
  • Integrated protection circuits
  • LED status lights
  • Velineon 1200XL Brushless Motor
  • “Big Block” brushless motor
  • 4-pole 1275 kV
  • 5mm output shaft
  • Aluminum slip-on heat sink
  • Dual motor cooling fans
  • 50+ MPH with Two 4s LiPo Batteries and Included Optional Spur Gear
  • Traxxas Stability Management
  • Helps prevents spinouts and loss of control
  • Adjusts from off to 100% assistance from the transmitter
  • TQi™ 2.4GHz High Output Radio System
  • TQi™ 2.4GHz transmitter
  • Traxxas Link enabled
  • TQi™ 2.4GHz 5-channel micro receiver (#6533) with fail-safe security and integrated telemetry ports
  • Automatically stores and loads settings for up to 30 Traxxas Link-enabled models—just switch on and drive, “model selection” is not required
  • Multi-Function knob
  • Adjustable steering and throttle percentage (dual rates)
  • Adjustable steering and throttle sensitivity (exponential)
  • Adjustable steering and throttle end points
  • High 13ms frame rate and near-zero latency for responsive control
  • Telemetry-ready 5-channel micro receiver with dual channel-1 inputs
  • BEC Voltage and Motor Temperature Sensor installed
  • New Body Mount System
  • Quick one-hand installation and removal
  • Uses pivoting rear latch mechanism
  • Eliminates body posts and clips
  • Reinforced for extra protection
  • Drivetrain
  • Full-time shaft-driven 4-wheel drive
  • All-metal gears and CVDs
  • Torque-Biasing Center Drive™ absorbs shocks and distributes power
  • 24mm splined wheel hexes
  • Wheel hexes retained with a clip
  • 17mm hex on outside of wheel
  • Sealed, silicone fluid-filled diffs with large module ring and pinion gears
  • Splined outdrives attached with external thru-bolt method
  • Heavy-duty Cush Drive™ with steel spur gear
  • Fully machined aluminum stub axles
  • Splined aluminum center driveshaft
  • New Motor Mounting System
  • Precision, preset gear mesh adjustments
  • No manual gear mesh adjustments are required
  • Motor retention separate from gear mesh
  • New Modular Composite Chassis
  • Rigid Chassis Structure
  • Modular chassis design interlocks with front and rear bulkheads
  • Motor mounts to rear bulkhead to eliminate gear crunching flex
  • Easy to service and access components
  • Driveline is sealed in the chassis to keep out dirt and grit
  • New Battery Retention System
  • No body clips or hook and loop straps
  • Battery hold-downs pivot for easy access
  • Adjustable for battery size
  • More secure than conventional retention systems
  • Integrated into chassis top brace for improved battery tray and chassis stiffness
  • New Steering Bell Cranks and Servo Saver
  • New high-output steering servo
  • Wired directly into the RX box, no external wires seen on chassis
  • New mounting system to fully support case
  • Double-shear, bearing supported servo horn
  • Suspension
  • Engineered to optimize suspension travel and steering angles
  • All critical suspension points have double shear strength
  • High strength steel suspension pins used throughout
  • Suspension pins retainers won’t come loose or “back-out”
  • 4mm machined pivot balls
  • C-hub and steering block geometry maximizes steering angle
  • Adjustable roll center
  • Fixed, high-strength camber and toe links
  • Steel upper and lower tie bars
  • Full contact sealed bearings used in exposed locations
  • New GTX Shocks
  • Machined aluminum threaded body
  • Extra-large bore and capacity
  • 5.2mm damper shaft
  • Lower seal cartridge includes integrated wiper seal combination
  • Adjustable upper spring retainer
  • Plastic shock caps with pivot balls
  • Fixed shock locations
  • Lower spring perches bolted on
  • Bumpers
  • Front energy absorbing rubber impact bumper
  • Lower front and rear skids for impact and abrasion resistance
  • Integrated nerf bars for side impact resistance
  • Wheels/Tires
  • 8x4x4 inch all-terrain tires
  • Large, dual diameter wheels
  • Specifically formulated 8s rubber compound
  • 2-piece foam insert
  • High-strength glue and bead design

What’s In The Box:

  • X-Maxx, Ready-To-Race® model with Traxxas Big Block™ brushless motor
  • VXL-8s waterproof electronic speed control with integrated telemetry
  • Quick Start Guide
  • TQi™ 2.4GHz radio system
  • High quality maintenance tools

What You’ll Need:


  • IMPORTANT: X-Maxx requires the use of LiPo batteries equipped with Traxxas High Current Connectors. Traxxas 4-Cell, 6700 mAh or greater, Power Cell LiPo batteries with iD are recommended (part #2890X).
  • LiPo Balance Charger with iD
  • Traxxas EZ-Peak Live 4s-capable charger is recommended for easy and fast charging performance (model #2971).
  • AA Alkaline Batteries

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