The Traxxas TRX-4® Scale and Trail® Crawler is an all-new Traxxas design that is loaded with innovation that instantly obsoletes the status quo with exciting new features, versatility, and capability. In other words, we built it the Traxxas way, rugged, powerful, and ready for fun!
Underneath the authentic scale look is a machine built for extreme off-road capability that takes you to new places and new adventures. Exclusive portal axles deliver maximum ground clearance that dramatically turns “no way” into “no problem.” Whether you are enjoying outdoor trails or getting technical on the rocks, the remote-locking front and rear differentials and high/low range transmission provide unmatched driving versatility.
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Exclusive to the TRX-4, 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.
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 axle 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 twist.
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. Our patented design has been proven rugged and capable in the Traxxas Summit. New sleeved micro cables control the differential action for scale appearance, without limiting the huge suspension articulation.
Why carry your crawler down the trail 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.
Hardened steel U-joints on the front and rear driveshafts provide smooth, reliable power delivery for non-stop fun.
The TRX-4’s twin friction plate slipper clutch provides some additional protection from motor stalls in extreme crawling conditions.
Black sealed ball bearings resist mud and dirt to keep your rig rolling smoothly.
A thick 1.5mm steel ladder 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.
The innovative shock towers allow four separate “bolt-on” wheelbase positions: 300, 312, 324, and 336mm to accommodate custom body fitment. Further fine tuning is possible with the axle links and adjustable shock position.
The finer details matter so we incorporated wire retainers into the frame rails, which provide a clean look and keep the wiring more secure from off-road hazards.
TRX-4’s dual-fit battery tray offers extreme flexibility when choosing batteries. For extended run times, the large upper tray accommodates a full-length 5000 mAh 3-cell LiPo or 7600 mAh 2-cell LiPo. 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 smaller integrated tray accepts smaller Traxxas batteries (that fit our 1/16 scale models) for increased forward weight bias.
Tough floor pans integrate with the wheel wells to enhance the scale appearance and keep debris out of the chassis.
All new oil-filled coil-over GTS shocks were created exclusively for the TRX-4 chassis to smooth out even the roughest 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.
The TRX-4 uses tough hex hardware throughout for improved strength and easy servicing.
TRX-4’s radical portal axle design raises the driveshafts higher to improve axle geometry and reduce driveshaft angles. Higher driveshafts and suspension links pass over obstacles to avoid high-centering your truck and reduce overall grinding wear.
With the front differential unlocked, the superior 45-degree steering angle negotiates around even the tightest bends with ease. This helps avoid awkward reversing maneuvers in tight spaces.
With a 56.49 degree out-of-box approach angle in the front, TRX-4 is ready to climb walls. An equally impressive 41.67 degree rear approach angle provides extreme capability, even in the deepest ruts.
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.
The TRX-4’s large 550 size brushed 21-turn Titan motor provides smooth reliable power and loads of torque to climb the toughest obstacles. The front mounted orientation moves the weight bias forward to get you up and over obstacles with improved traction.
HV stands for compatibility with the high-voltage 3S LiPo battery packs for greater efficiency and power. In addition to the three standard profiles (Sport, Race, Training Mode®), the XL-5 HV features a Trail profile that serves up a little bit of drag brake for smooth intuitive driving for most of your adventures. A new Crawl profile introduces hill hold and instant reverse for extremely technical courses. Either will help you navigate the trail with ease.
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 fan keeps temperatures down for extended run times.
A new full-metal gear digital servo gives you the durability and steering authority you need to confidently and reliably power through tough challenges.
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 Wireless Module so you can set up everything right from your smartphone.
TRX-4 uses three fully-waterproof micro servos to actuate the front and rear differentials as well as the high/low range selection on the transmission. Sleeved micro cables eliminate complicated linkages that would otherwise limit suspension articulation.
The inner fenders are equipped with pockets to install our optional LED rock light kit, casting light right where it’s needed. Optional Rigid® light bar and bolt-in headlight kits illuminate the trail ahead and provide an authentic appearance. A separate regulated power supply ensures powerful lighting with consistent brightness. All light kits and light kit accessories are sold separately.
Tough inner fenders integrate with the floor pans and shock towers to provide substantial look and feel to the TRX-4. The authentic realism adds to the fun while also helping to keep rocks, mud, and twigs out of the chassis.
Functional rock sliders help prevent damage and provide extra support for the body. The additional bracing adjusts for different widths.
The 1.9” wheels provide a bold scale look for the TRX-4 and come pre-glued and mounted to aggressive, S1-compound Canyon Trail tires. Deep tread blocks flex for maximum traction on the rocks. The trail-tuned foam inserts provide realistic sidewall flex for authentic climbing action. A standard 12mm steel hex makes the TRX-4 chassis compatible with popular 1.9” wheel and tire combinations.
TRX-4’s functional roll cage fastens securely to the body to provide rigidity and rollover protection. The top rack stores your scale accessories and adds realistic looks to the truck. Add the optional Rigid® light bar to the pre-molded bosses on the rack.
Tough, yet flexible and impact resistant fender flares fasten tightly to the inner fender wells to provide rugged protection and awesome looks.
The TRX-4 Defender body secures to the frame at the rear bumpers, rock sliders, and with the top mounting posts. This multi-point mounting system prevents unrealistic body shake and provides rigid support for the spare tire and accessories in the rear.
|Length:||23.07 inches (586mm)|
|Front Track:||9.78 inches (249mm)|
|Rear Track:||9.78 inches (249mm)|
|Ground Clearance:||3.14 inches (80mm)|
|Height:||11.48 inches (292mm)|
|Wheelbase:||12.75 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)|
|Speed Control:||XL-5 HV|
|Motor (electric):||21T Reverse Rotation|
|Transmission:||2-speed Hi-Lo, Remote Shifting|
|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|
|Battery Tray:||158.75 L x 47 W x 23/26mm H|
|Type:||High-torque brushed motor|
|Length:||3.071” (78mm) overall length, 2.25” (57mm) can length, 1.532” (38.9mm diameter)|
|Turns:||21T reverse rotation|
|Input Voltage:||6–7 Cells NiMH, 2–3S LiPo|
|Case Size:||1.23” W x 2.18” D x 1.04” H|
|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|
|BEC Voltage:||6.0 VDC|
|Power Wire:||14 Gauge / 5”|
|Input Harness Wire:||26 Gauge / 14.5”|
|Low Voltage Detection (LVD):||2-Stage indicators, switchable (on or off)|
|Thermal Protection:||Thermal Shutdown|
|Single-button setup:||Yes, Traxxas EZ-Set®|