Traxxas TRX-4 Sport crawler RTR 1/10 (Red)

The Traxxas TRX-4 Sport crawler is a ready-to-run 1/10 trail truck designed for drivers who want serious trail capability straight from the box. It pairs a lightweight pickup-style body with portal axles, a rigid steel frame and waterproof electronics so you can tackle rocks, roots and wet conditions with confidence. Controls are beginner-friendly while the hardware is built to handle demanding trails.

Key Features

• Pickup-style body—tough yet lightweight shell with low-profile bumpers for extra clearance and red differential covers plus D-rings for authentic styling.
• Trail-tuned XL-5 HV waterproof speed control—fully sealed electronics that handle wet conditions and multiple drive profiles (Sport, Race, Training, Trail and Crawl) so you can pick the control behavior that fits the terrain.
• Drive modes explained—Sport mode gives full forward/brake/reverse; Race mode disables reverse; Training mode limits speed and boosts braking; Trail mode adds a drag brake in neutral; Crawl mode gives instant reverse and a full hill-hold brake.
• Traxxas EZ-Set one-button setup—quick setup and calibration of the speed control with a single button for hassle-free tuning.
• Large heat sink—efficient cooling to keep the XL-5 running reliably on long trail sessions.
• Battery compatibility—designed to work with common NiMH and LiPo battery packs for flexible runtime and power options.
• Titan 21T reverse-rotation motor—a high-torque brushed 550-class motor with internal cooling fan, preset gear mesh and independent motor retention for easier service.
• TQ 2.4 GHz radio—ergonomic transmitter with internal antenna plus a micro receiver with fail-safe for secure control.
• Watertight receiver box—patented O-ring sealed housing keeps the micro receiver dry in wet conditions.
• Rigid steel frame—1.5 mm steel rails increase torsional rigidity and provide four selectable wheelbase positions (300, 312, 324, 336 mm) for different chassis lengths.
• Adjustable layout—rear shock towers support short- and long-wheelbase setups, bumpers can be moved fore and aft, and rock rails adjust for width to suit trail style.
• Integrated wire routing—clips built into the frame rails keep wiring tidy and protected.
• Hinged battery compartment—quick-access strap with no loose pins, accepts a range of battery heights, full-length long packs and even smaller 1/16-size packs with an optional strap.
• Portal axles—raise ground clearance, remove torque twist, use steel gears and improve axle geometry to reduce strain on driveshafts.
• Shaft-driven 4WD—full-time drivetrain with tough 6 mm stub axles, steel front CV driveshafts and hardened rear axle shafts for lasting service.
• Spool-locked differentials—front and rear spools deliver predictable traction for technical crawling.
• Steel gear transfer case—durable center case built for trail use.
• Serviceable single-speed transmission—steel gears, dual horizontal shafts and a twin friction-plate slipper clutch that’s easy to remove for maintenance.
• Chassis-mounted steering—2075X metal-gear digital high-torque waterproof servo, direct steering (no servo saver) and corrected geometry for reduced bump steer with a 45° steering angle.
• Suspension design—front 3-link with panhard and rear triangulated 4-link, heavy-duty rod ends with steel hollow balls and 5 mm steel link rods with 4 mm threaded ends for reliable articulation.
• Aluminum GTS shocks—oil-filled coilover shocks exclusive to the TRX-4 chassis, silver-anodized threaded bodies with collars to adjust ride height, O-ring cap seals and dual X-ring shaft seals for smooth damping.
• Wheels and tires—black 5-spoke wheels with pre-mounted 1.9" Canyon Trail tires, trail-tuned foam inserts and S1 rubber compound on 12 mm steel hexes for grip on rough terrain.
• Sealed ball bearings—for reduced friction and extended drivetrain life.
• Hex hardware—rust-resistant black oxide coating for long-lasting fasteners.
• Requires battery and charger—battery and charger are sold separately so you can choose the pack and charging solution that fits your needs.

Technical Specifications

• Model Name: TRX-4 Sport
• Model Type: Trail / Crawler
• Model Skill Level: 1 (beginner-friendly)
• 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 inches (78 mm) overall, 2.25 inches (57 mm) can length
• Motor Diameter: 1.53 inches (39 mm)
• Motor Shaft Size: 3 mm
• Motor Connector Type: Bullet

Why Choose the TRX-4 Sport

The Traxxas TRX-4 Sport crawler balances straightforward, beginner-friendly controls with real trail hardware—portal axles, aluminum GTS shocks and a steel frame—so it feels at home on both casual outings and technical lines. If you want an RTR 1/10 trail rig that’s easy to drive and built to take abuse, the TRX-4 Sport delivers practical upgrades and adjustability for growing skill levels.

Note: The Traxxas TRX-4 Sport crawler includes radio and electronics, but requires a separate battery and charger to run.