TRX-4 Advanced Features Overview
Get to know the advanced features of your TRX-4 and TRX-6
The Traxxas TRX-4 lineup* offers a host of advanced features that help make it incredibly versatile for trail driving, rock climbing, and even general RC fun around the house. This guide will take you through 3 of the main features to help you get the most of your time behind the wheel.
T-Lock Remote Locking Differentials
Conventional crawlers equipped with axle spools sacrifice turning radius for traction. Traxxas gives you the freedom and versatility to lock and unlock both the front and rear differentials to suit your driving needs, all controlled remotely from your transmitter*. Leave the differentials unlocked for relaxed driving on the trail with smooth, tight turning and better handling at high speeds. When the trail gets technical, lock the front and rear differentials, or just the front differential, for superior pull and grip over extreme terrain.
High/Low 2-Speed Transmission
Why carry your crawler when you can drive? The TRX-4* features a high speed gear to get you to your next crawling challenge quickly. When you get there, flip the rocker switch on your transmitter to engage low range and conquer tough terrain with exceptional torque.
Cruise Control
The Traxxas TQi radio system features exclusive cruise control for long-distance treks. Set your speed using the transmitter and then use the 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 is compatible with the #6511 Traxxas Link Wireless Module so you can set everything up right from your smartphone.

The Traxxas TRX-4 Scale and Trail Crawler lineup captures legendary nameplates in complete detail, and combines them with the capability to go virtually anywhere. Featuring portal axles for added ground clearance, T-Lock selectable locking differentials, and a High/Low 2-speed transmission, TRX-4 models capture the spirit of full-size off-roaders and bring it home for your enjoyment.
*TRX-4 Sport models feature full-time locked differentials and a single-speed transmission. To upgrade to these features, purchase the #8195 Differential Kit, #8196 Two-Speed Conversion Kit, and Power-UP to a 4-Channel TQi Radio System.
