Traxxas TRX-4 Sport Crawler RTR Trail Truck (Blue)

Traxxas TRX-4 Sport Crawler is a ready-to-run 1/10 trail truck designed to handle rocks, roots, and tight trail sections right out of the box. Waterproof electronics, portal axles, and a shaft-driven 4WD drivetrain give predictable control on technical terrain, while the modular steel frame and adjustable wheelbase let you tune stance and handling for different trails.

Key Features

• Tough, lightweight pickup truck body delivers scale looks while keeping weight down for better handling on climbs.
• Low-profile bumpers increase ground clearance for tight obstacles and steep approaches.
• Red differential covers and D-rings add scale detail and provide handy recovery points.
• Trail-tuned XL-5 HV waterproof electronic speed control offers multiple drive profiles so you can match throttle behavior to the trail: Sport (forward/brake/reverse), Race (forward/brake/no reverse), Training (50% forward/100% brake/50% reverse), Trail (forward/brake/reverse with drag brake), and Crawl (forward/instant reverse with 100% hill-holding brake).
• Traxxas EZ-Set one-button setup makes ESC programming fast and straightforward.
• Large, efficient heat sink on the ESC helps keep temperatures in check during demanding climbs.
• Wide voltage range supports 6–7 cell NiMH (7.2–8.4 V) and 2–3s LiPo (7.4–11.1 V) packs for flexible battery choices.
• Two-stage low-voltage protection (LVD) helps safeguard your battery under load.
• Titan 550 (21T) reverse-rotation motor supplies strong, controllable torque and includes an internal cooling fan for sustained runs.
• Preset gear mesh adjustments and separate motor retention simplify setup and servicing.
• TQ 2.4 GHz 2-channel transmitter is ergonomic with an internal antenna for comfortable, reliable control.
• Traxxas 6519 micro receiver with fail-safe gives secure link and quick response.
• Patented O-ring sealed watertight receiver box keeps the micro receiver dry in wet conditions.
• Rigid steel frame uses 1.5 mm thick rails for increased torsional stiffness and long-term durability.
• Four selectable wheelbase positions (300 mm, 312 mm, 324 mm, 336 mm) let you switch between compact and long-wheelbase setups.
• Adjustable rear shock tower supports both short-wheelbase (SWB) and long-wheelbase (LWB) configurations.
• Bumpers adjust fore and aft to fine-tune approach and departure angles.
• Rugged rock rails are adjustable for width to protect the chassis and body sides.
• Integrated wire routing clips in the frame rails keep wiring neat and out of harm's way.
• Innovative battery compartment features a hinged strap for fast battery changes and no loose pins to lose.
• Compartment accepts different battery heights and full-size long packs, plus an integrated area for smaller 1/16 scale batteries (optional strap required).
• Portal axles raise center ground clearance, reduce torque twist, use steel gears, and improve axle geometry to lower driveshaft strain.
• Drivetrain is full-time shaft-driven 4WD with tough 6 mm stub axles, steel front CV driveshafts, and hardened steel rear axle shafts.
• Front and rear differentials are spool-locked for predictable traction on steep climbs.
• Steel gear transfer case adds reliable power transfer and longevity.
• Transmission is single-speed with steel gears, dual horizontal shafts, and a twin friction-plate slipper clutch that’s easy to remove for servicing.
• Steering uses a chassis-mounted 2075X metal-gear digital high-torque waterproof servo, provides a superior 45° steering angle, and uses direct steering (no servo saver) with geometry corrected to reduce bump steer.
• Suspension features a front 3-link with panhard and a rear triangulated 4-link layout, heavy-duty rod ends with steel hollow balls, and 5 mm diameter steel link rods with 4 mm threaded ends for secure mounting.
• Aluminum GTS shocks are oil-filled coilovers with silver-anodized, threaded bodies and collars to easily adjust ride height; O-ring cap seals and dual X-ring shaft seals keep oil in and dirt out while delivering smooth damping.
• Wheels and tires come as rugged black 5-spoke wheels pre-mounted with 1.9" Canyon Trail tires, trail-tuned foam inserts, and S1 rubber compound on 12 mm steel hex hubs for traction and durability.
• Sealed ball bearings throughout reduce friction and extend drivetrain life.
• Hex hardware is finished with a rust-resistant black oxide coating for long-term corrosion resistance.
• Requires battery and charger (sold separately) so you can pick the battery chemistry and capacity that fits your driving style.

Technical Specifications

• Model Name: TRX-4 Sport
• Model Type: Trail / Crawler
• Model Skill Level: 1
• Scale: 1/10
• Weight: 5.79 pounds (2.63 kg)
• Length: 21.93 inches (557 mm)
• Width: 9.78 inches (249 mm)
• Front Track: 9.78 inches (249 mm)
• Rear Track: 9.78 inches (249 mm)
• Height: 9.47 inches (241 mm)
• Wheelbase: 12.28 inches (312 mm)
• Center Ground Clearance: 3.14 inches (80 mm)
• Drivetrain: Shaft-driven 4WD
• Transmission: Single speed
• Differential Type: Spool (no differential)
• Gear Pitch: 32 pitch
• Servo(s): 2075X metal gear, digital high-torque, waterproof
• Radio System: TQ 2.4 GHz 2-channel radio
• Battery Compartment Specs: 159 mm x 47 mm x 23 mm, 26 mm
• Motor Name: Titan 21T Reverse Rotation
• Motor Type: High-torque brushed motor
• Motor Weight: 8.47 ounces (240 g)
• Motor Length: 3.07 in (78 mm) overall, 2.25 in (57 mm) can length
• Motor Diameter: 1.53 in (39 mm)
• Motor Shaft Size: 3 mm
• Motor Connector Type: Bullet

What's Included

• TRX-4 Sport RTR trail truck with installed electronics
• TQ 2.4 GHz 2-channel transmitter
• Traxxas 6519 micro receiver (installed)
• Installed XL-5 HV waterproof ESC and Titan 21T motor

Why Choose This Truck

The Traxxas TRX-4 Sport Crawler balances scale realism, ease of use, and serviceability. Its adjustable wheelbase, portal axles, and durable steel frame let you tune handling and clearance for both tight technical lines and faster trail sections, making it a solid pick for beginners and experienced trail drivers who want a flexible, ready-to-run rig.