Traxxas TRX-4 2021 Ford Bronco RTR R/C Rock Crawler Truck

Quantity: Only 5 left in stock.




After 25 years, the Bronco returns as Ford’s top-performing 4X4 and America’s most sought-after SUV.


Traxxas captures the eagerly-anticipated Bronco in exacting detail with all the capability and versatility of the award-winning TRX-4. The Traxxas Bronco combines Ford-approved realism and class-leading performance for exciting off-road adventure no matter where the trail takes you.

Note: Please specify color preferences, if any, in the order comments at checkout. We will make every effort to honor your choices.


Heavy-Duty Steel Frame Rails

A thick 1.5mm steel lader frame with molded cross members provides exceptional torsional rigidity to resist even the worst chassis twisting articulation. This extremely rigid backbone lets the suspension do the work it was designed to do. You'll feel the difference on trails where the elimination of chassis flex allows for precise wheel placement when navigating technical terrain.


Dual Battery Tray

TRX-4's main battery tray accommodates a full-length 5000mAh 3-call LiPo or 7600mAh 2-cell LiPo for extended run times. A hinged battery strap provides quick and secure battery mounting without pins to lose in the field. The innovative strap flips over to adjust for different height batteries. A secondary front-mounted battery tray accepts smaller 1/16 scale Traxxas batteries to position weight directly over the front axle for maximum climbin traction on technical climbs.


Aluminum Scale Shocks

Oil-filled coil-cover GTS shocks were created exclusively for the TRX-4 chassis to smooth out even the roughes trails. These silver-anodized aluminum shocks deliver silky-smooth damping and feature threaded bodies for easy ride height adjustment. The convincing scale realism looks great and they perform even better with an O-ring cap seal and dual X-ring shaft seals.


Portal Axles

Exclusive to TRX-series trucks, portal axles lift the differential pumpkin to provide incredible ground clearance. This radical design also improves axle geometry and reduces strain on the driveshafts. Steel gears ensure trouble-free performance, no matter how technical the climb.


Torque Twist Eliminated

On conventional rigs with the limited gear reduction in the differentials, motor torque is applied to the frame to the point of twisting you right off the rocks. The TRX-4's radical portal acle design reduces the gear ratio at the wheels, virtually eliminating torque twist through the chassis. Total axle gear reduction is over twice non-portal designs so Titan motor torque delivers smooth forward motion, not frame twists.


High Ground Clearance

Portal axles help raise the center ground clearance to an unparalleled 3.14 inches (80mm), while raised suspension links and driveshafts clear the rocks underneath, Superior capability equals more fun no matter where your adventure takes you.


XL-5 HV Speed Control

The XL-5 HV is 3-call LiPo compatible and features a Trail profile with a strong drag brake setting to improve control, and Crawl profile with hill hold and instant reverse for extremely technical courses. Both help you navigate any trail with ease.


Titan 21T 550 Motor

Torque rules the trail! The TRX-4's massive Titan 21T motor pumps out huge torque to get you up and over anything that gets in the way. An integrated cooling dan keeps temperatures down for extended run times.


TQi(TM) 4-Channel Radio System

The Traxxas TQi radio system features exclusive cruise control for long-distance treks. Set your speed using the transmitter and then use multi-function knob to fine-tune it faster or slower to match your pace. The grip-mounted rocker switch selects high or low range gears to suit the terrain while a separate toggle switch engages or disengages the locking differentials, all on the fly. Best of all, the TQi differentials with the TRA6511 Wireless Module so you can set up everything right from your smartphone.



  • Truck Specs:
    • Length (overall):     22.98 inches (584mm)
    • Length (chassis):     21.59 inches (549mm)
    • Front Track:     9.78 inches (249mm)
    • Rear Track:     9.78 inches (249mm)
    • Ground Clearance:     3.14 inches (80mm)
    • Weight:     6.42lb (2.91kg)
    • Height:     9.4 inches (239mm)
    • Wheelbase:     12.8 inches (324mm)
    • 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)
    • Approach Angle:     52°
    • Departure Angle:     49°
    • Breakover Angle:     58°
    • 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(TM) 2.4 GHz 4-Channel Transmitter
    • Receiver:     6533
    • Skill Level:     1
    • Battery Tray:     158.75 L x 47 W x 23/26mm H
  • Motor Specs:
    • 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



  • Officially Licensed 2021 Ford® Bronco Body
  • 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(TM) - 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)



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


Used with permission, copyright ©2022 Traxxas®. Copyright ©2022 Brey Corp. t/a Hobby Works.®



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