SKU: 020334775412


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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®.


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)


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


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

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

Weight: 161.4g (5.69oz)

Motor Connectors: Traxxas 6.5mm Bullet Connectors

Battery Connectors: Traxxas High-Current Connectors

Power Wire: 10-gauge Maxx Cable

MODEL 77086-4: Fully assembled, Ready-To-Race®, with TQi™ 2.4GHz Radio System, VXL-8s Brushless Power System, and ProGraphix® painted body. Available in red or blue.


What’s In The Box:


X-Maxx, Ready-To-Race® model with Traxxas Big Block™ brushless motor

VXL-8s waterproof electronic speed control

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

Four AA alkaline batteries for the transmitter.




Velineon VXL-8s Brushless Power System

VXL-8s Waterproof Electronic Speed Control

8s LiPo compatible

Built-in cooling fan

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 Pinion 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




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




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


Front energy absorbing rubber impact bumper

Lower front and rear skids for impact and abrasion resistance

Integrated nerf bars for side impact resistance


8x4x4 inch all-terrain tires

Large, dual diameter wheels

Specifically formulated 8s rubber compound

2-piece foam insert

High-strength glue and bead design

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