Outfitted for Adventure

The Traxxas TRX-4 Tactical Unit is a rapid-response vehicle designed to charge into practically any situation, ready for fun and adventure. Its lightweight body offers high-speed agility and superior technical crawling. Where other trucks fear to go, the Tactical Unit charges ahead full throttle!

The secret to the Tactical Unit’s extreme all-terrain capability lies underneath its tough camouflaged body. Exclusive portal axles deliver maximum ground clearance and virtually eliminate torque twist. Remotely-actuated front and rear differentials unlock for all-out speed and lock for rock-gripping traction on treacherous surfaces. The high/low range transmission transforms the Titan motor’s power into incredible torque in low gear or blazing speed in high gear. Built the Traxxas way, the Tactical Unit is tough, powerful, and ready to take on your wildest adventures.

Now Available!

Model #82066-4$429.99

TRX-4 Tactical Videos

Innovation

Radically innovative technology and precision engineering create a new high-speed extreme terrain vehicle…Only from Traxxas.

Details

The Tactical Unit’s extreme off-road capability lies in the technology beneath its tough camouflaged body.
Heavy Duty Steel Frame Rails

Heavy Duty Steel Frame Rails

Adjustable Wheelbase

Adjustable Wheelbase

Molded Wire Retainers

Molded Wire Retainers

Dual-Fit Battery Tray

Dual-Fit Battery Tray

Floor Pans

Floor Pans

Aluminum Scale Shocks

Aluminum Scale Shocks

Heavy Duty Steel Links

Heavy Duty Steel Links

Hex Hardware

Precision Hex Hardware

Portal Axles

Portal Axles

Torque Twist Eliminated

Torque Twist Eliminated

T-Lock™ Remote Locking Differentials

T-Lock Remote Locking Differentials

High/Low Transmission

High/Low Transmission

Hardened Steel U-Joints

Hardened Steel U-Joints

Twin Friction Plate Slipper Clutch

Twin Friction Plate Slipper Clutch

Sealed Ball Bearings

Sealed Ball Bearings

Raised Center Driveshafts and Suspension Links

Raised Center Driveshafts and Suspension Links

High Steering and Drag Links

High Steering and Drag Links

45-Degree Steering Angle

45-Degree Steering Angle

Extreme Approach Angles

Extreme Approach Angles

High Ground Clearance

High Ground Clearance

Front Motor Design

Front Motor Design

New XL-5 HV ESC

New XL-5 HV ESC

Titan 21T 550 Motor

Titan 21-turn 550 Motor

Waterproof Metal Gear Servo

Waterproof Metal Gear Servo

TQi 4-Channel Radio System

TQi 4-Channel Radio System

Waterproof Micro Servos with Sleeved Cables

Waterproof Micro Servos with Sleeved Cables

Molded Inner Fenders

Molded Inner Fenders

Rock Sliders

Rock Sliders

1.9” Scale Wheels and Tires

1.9” Scale Wheels and Tires

Tough Fender Flares

Tough Fender Flares

Secure Body Mounting System

Secure Body Mounting System

Make sure you don’t miss any of the latest Traxxas Tactical Unit news, accessories, and updates.

Tactical Data

Length: 23.07 inches (586mm)
Front Track: 9.78 inches (249mm)
Rear Track: 9.78 inches (249mm)
Ground Clearance: 3.14 inches (80mm)
Weight: 6.9lb (3.129kg)
Height: 9.92 inches (252mm)
Wheelbase: 12.75 inches (324mm)
Approach Angle: 53.17°
Departure Angle: 41.67°
Breakover Angle: 56.97°
Front Shock Length: 3.54 inches (90mm)
Rear Shock Length: 3.54 inches (90mm)
Front Wheels: 1.9 x 1.02 inches (49 x 26mm)
Rear Wheels: 1.9 x 1.02 inches (49 x 26mm)
Front Tires: 4.64 x 1.89 inches (118 x 48mm)
Rear Tires: 4.64 x 1.89 inches (118 x 48mm)
Hex Size: 12mm
Speed Control: XL-5 HV
Motor (electric): 21T Reverse Rotation
Transmission: 2-speed Hi-Lo, Remote Shifting
Gear Pitch: 32P
Differential Type: 4 Gear, Remote Locking
Chassis Structure / Material: Steel Ladder Frame with Nylon Composite Crossmembers
Brake Type: Electronic “Hill Hold”
Drive System: Shaft Driven 4WD
Steering: Chassis Mounted Servo
Servo: 2075X Metal Gear
Transmitter: TQi 2.4 GHz 4-Channel Transmitter
Receiver: 6533
Skill Level: 2
Battery Tray: 158.75 L x 47 W x 23/26mm H
Type: High-torque brushed motor
Size: 550
Weight: 390g (13.76oz)
Length: 3.071” (78mm) overall length, 2.25” (57mm) can length, 1.532” (38.9mm diameter)
Turns: 21T reverse rotation
Voltage: 16.8V
Input Voltage: 6–7 Cells NiMH, 2–3S LiPo
Case Size: 1.23” W x 2.18” D x 1.04” H
Weight: 2.6oz (74g)
Motor Limit: 21-turns (550 size)
On Resistance Forward: 0.004 Ohms
On Resistance Reverse: 0.004 Ohms
Peak Current - Forward: 100A
Peak Current - Reverse: 100A
Braking Current: 60A
Continuous Current: 18A
BEC Voltage: 6.0 VDC
BEC Current: 1A
Power Wire: 14 Gauge / 5”
Input Harness Wire: 26 Gauge / 14.5”
Transistor Type: MOSFET
PWM Frequency: 1700Hz
Low Voltage Detection (LVD): 2-Stage indicators, switchable (on or off)
Thermal Protection: Thermal Shutdown
Profile selection:
  • Sport Mode: 100% FWD, 100% brakes, 100% REV
  • Race Mode: 100% FWD, 100% brakes, no REV
  • Training Mode:* 50% FWD, 100% brakes, 50% REV
  • Trail Mode: 100% FWD, 100% Brake, 100% REV, Trail-Tuned Brake on Neutral
  • Crawl Mode: 100% FWD, 100% Instant REV, 100% Brake on Neutral
Single-button setup: Yes, Traxxas EZ-Set®
* Patented
  • Tough Night-Camo Body
    • Lighter weight to lower CG and increase agility
    • Rugged fender flares
    • Front bumper with tow hooks and replica winch
    • Rear bumper with scale accessories and functional spare tire
    • Full Nylon composite wheel wells and floor pans
  • Trail-tuned XL-5 HV Waterproof Electronic Speed Control
    • Fully waterproof design
    • Five drive profiles
      • Sport Mode — forward / brake / reverse
      • Race Mode — forward / brake / no reverse
      • Training Mode — 50% forward / 100% brake / 50% reverse (patented)
      • Trail Mode — forward / brake / reverse / with trail-tuned drag brake in neutral
      • Crawl Mode — forward / instant reverse - no neutral with 100% hill holding brake
    • Traxxas EZ-Set® one-button setup
    • Large, efficient heat sink
    • Wide voltage latitude 6–7 cell NiMH (7.2–8.4V) and 2–3S LiPo (7.4–11.1V)
    • Two stage low voltage protection (LVD)
  • Motor
    • Powerful Titan 21T reverse rotation motor with internal cooling fan
    • Precision, preset gear mesh adjustments
    • Motor retention separate from gear mesh
  • Portal Axles
    • Increase ground clearance (3.14”)
    • Eliminate torque twist
    • Steel gears
    • Improve axle geometry and reduce strain on driveshafts
  • Rigid Steel Frame
    • 1.5mm thick steel frame rails increase torsional rigidity
    • Innovative design allows four wheelbase positions (300mm, 312mm, 324mm, 336mm)
    • Adjustable rear shock tower positions for SWB and LWB configurations
    • Bumpers adjust fore and aft
    • Rugged rock rails adjust for width
    • Wire routing clips integrated into frame rails
  • Drivetrain
    • Full-time shaft driven 4-wheel drive
    • Tough 6mm stub axles
    • Steel front CV driveshafts
    • Hardened steel rear axle shafts
    • Remote locking steel gear differentials with cable-actuation
    • Steel gear transfer case
  • Innovative Battery Compartment
    • Hinged battery strap allows quick and easy battery access
    • No pins to lose
    • Accommodates different height batteries
    • Accepts full-size long battery packs
    • Integrated compartment accepts smaller 1/16 scale batteries (with optional strap)
  • Transmission
    • Two speed high/low range with remote shifting
    • All metal gears
    • Dual horizontal shafts
    • Twin friction plate slipper clutch
    • Easily removed for servicing
  • Steering
    • Chassis mounted 2075X metal gear digital servo
    • Superior 45° steering angle
    • Direct steering (no servo saver)
    • Steering geometry corrected for bump steer
  • Suspension
    • Front — 3 link with panhard
    • Rear — Triangulated 4 link
    • Heavy-duty rod ends with steel hollow balls
    • 5mm diameter steel link rods with 4mm threaded ends
  • Aluminum GTS Shocks
    • Oil-filled coilover GTS shocks exclusive to TRX-4 chassis
    • Silver-anodized aluminum bodies
    • Threaded bodies with collars easily adjust ride height
    • Silky smooth damping for the toughest trails
    • O-ring cap seal and dual X-ring shaft seals
  • Wheels and Tires
    • 1.9” Canyon Trail tires with trail-tuned foam inserts
    • Pre-glued and mounted to tough black scale wheels
    • Trail tuned S1 rubber compound
    • 12mm steel hex
  • Transmitter
    • TQi 2.4GHz 4-channel transmitter
    • Traxxas Link enabled
    • Telemetry ready #6533 5-channel micro receiver with failsafe
    • Automatically stores and loads settings for up to 30 Traxxas Link enabled models
    • Exclusive Cruise Control feature for extended trail driving
    • Adjustable steering and throttle sensitivity (exponential)
    • Adjustable steering and throttle endpoints
    • High 13ms frame rate and near-zero latency for responsive control
  • Patented O-Ring sealed watertight receiver box keeps the micro receiver dry
  • Sealed Ball Bearings
  • Hex hardware with rust-resistant black oxide coating
MODEL 82066-4: TRX-4: 1/10 Tactical Unit, Fully-Assembled, Waterproof, Ready-To-Drive®, with TQi 2.4GHz Radio System, XL-5 HV Electronic Speed Control, and ProGraphix® Painted Tactical Body.

What’s In The Box:

  • TRX-4 Tactical Unit, Ready-To-Race® model
  • XL-5 HV waterproof electronic speed control
  • Titan 21T reverse rotation motor
  • TQi 2.4GHz radio system with cruise control
  • High quality maintenance tools

What You’ll Need: