The Traxxas TRX-4 series leads the way as trail-trucking’s top-performing, most innovative 4X4s. Whether you’re a casual trail cruiser or one of RC off-roading’s most demanding enthusiasts, nothing beats a TRX-4—except for the TRX-4 you build yourself. The new TRX-4 Sport Unassembled Kit lets you do just that. Build it your way, for your terrain and your off-road mission. Experience the TRX-4’s superior engineering up close as you put its premium parts together, and finish it off with a full assortment of included accessory options. Expedition Rack, snorkel, spare tire mount, LED-ready grille and tailgate panel—you’ll find all these and more right in the box. You choose the power system and radio gear, or transfer your setup from another model—the options are endless.

Run Time (Minutes)

50%Complete (success)N/A

Top Speed


Skill Level

50%Complete (warning)Intermediate

Charge Time (Hours)

50%Complete (danger)N/A

Remote Locking Differentials

The TRX-4 has differentials that you can lock from your remote controller. No need to break from the action to push on a lever or install locking parts just flick a switch on the fly and keephaving fun. (Remote differential kit sold separately)

Traxxas Remote Locking Differentials
Portal Axles

The first rock crawler to have the luxury of having the extra ground clearance axle portals provide. Go where others can't with the Traxxas TRX-4!

Traxxas TRX-4 Axle Assembly Front
High/Low Transmission

Why carry your crawler down to the trail when you can drive? The Traxxas TRX-4 features a high-speed gear to get to your next crawling challenge quickly. When you get there, flick the rocker switch on your remote controller to engage low range and conquer tough terrain with exception torque. (Two speed kit sold separately)

Traxxas TRX-4 Transmission Assembly

  • Kit build
  • Aluminium GTS shocks
  • Steel chassis rails
  • Portal axle
  • Canyon trail 1.9" tyres
  • Scaled expedition rack with accessories included
  • Pre-cut clear TRX-4 sport body
  • Easy to follow step by step instructions
  • Length: 557mm (21.93")
  • Width: 249mm (9.78")
  • Height: 241mm (9.47")
  • Weight: 2.63kg (5.79lbs) w/ electronice
  • Wheelbase: 312mm (12.28")
  • Drivetrain: 4WD
  Required Items (Not Included)
  • 4 AA Batteries
  • Radio
  • ESC
  • Motor
  • Steering Servo
  • 7.2-11.1v Battery
  • Charger
  • Tire Glue
  • Tools
  • Assembly

Assembly Type Kit
Max LiPo Power 3S (11.1v)
Size (Scale) 1/10
Skill Level Intermediate
Power Source Electric Brushed
Chassis Type Crawler
On/Off Road Off Road
Drivetrain 4WD
Factory specs
Max LiPo power 3S (11.1v)
Front shock oil 30w
Rear shock oil 30w
Wheel hex size 12mm

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