Traxxas XRT 8S Brushless X-Truck 1/6 4WD RTR Blue 78086-4

The Traxxas XRT combines the extreme 8S power and durability of the X-Maxx platform with a low-profile, race-inspired chassis engineered for higher-speed handling. Its ultra-wide stance, low centre of gravity and responsive suspension make it suited to fast off-road driving, large jumps and high-power recreational bashing.

The blue clipless body sits low over the chassis and incorporates an internal support cage with strategically positioned external skids. Gravix race tyres provide stable, precise handling across hard-packed dirt and mixed off-road surfaces, while the rear wing adds high-speed stability.

Power comes from the waterproof VXL-8s electronic speed controller and Velineon 1200XL 1275kV brushless motor. With two matching 4S LiPo batteries and the included optional high-speed gearing, Traxxas rates the XRT for speeds exceeding 60mph or approximately 96km/h.

Features

• Race-Inspired X-Truck Platform: Combines large-scale strength with responsive high-speed handling
• Low Centre of Gravity: Battery trays, steering servo and drivetrain components sit low in the chassis
• Ultra-Wide Stance: 595mm track width provides increased stability during fast cornering
• Low-Profile Blue Body: Aerodynamic body design reduces lift at high speed
• Clipless Body Mounting: Allows fast body removal without conventional body clips
• Internal Body Cage: Reinforces the body and reduces flex during impacts
• Protective External Skids: Shield common body contact points during rollovers
• Rear Wing: Adds high-speed stability and protects the rear body area
• VXL-8s Brushless ESC: Waterproof electronic speed controller with integrated telemetry capability
• Velineon 1200XL Motor: Four-pole 1275kV brushless motor with aluminium heatsink
• Dual Motor Cooling Fans: Help manage motor temperature during demanding operation
• Traxxas Stability Management: Adjustable electronic assistance improves control on loose surfaces
• TQi Radio System: Included 2.4GHz transmitter provides precise steering and throttle control
• Traxxas Link Compatible: Supports optional wireless adjustment and telemetry display
• All-Metal 8S Driveline: Designed to withstand high-output brushless power
• Steel Four-Gear Differentials: Hardened bevel gears provide strength under heavy loads
• Limited-Slip Differentials: Help balance traction and steering response
• Steel Constant-Velocity Driveshafts: Deliver power through the long-travel suspension
• Extruded Aluminium Centre Driveshaft: Provides a strong central drivetrain connection
• Torque-Biasing Centre Drive: Distributes power between the front and rear drivetrains
• Cush Drive System: Helps absorb drivetrain shock during hard acceleration and landings
• Composite Nylon Tub Chassis: Rigid modular construction improves strength and servicing access
• Long-Travel Independent Suspension: Maintains tyre contact across rough terrain
• GTX Aluminium Shocks: Oversized oil-filled dampers provide smooth and consistent suspension control
• Threaded Shock Bodies: Allow spring-preload and ride-height adjustment
• Double-Shear Suspension Mounts: Support critical suspension points from both sides
• Gravix Race Tyres: Hybrid tread pattern provides grip and stable high-speed running
• Pre-Glued Tyres: Factory-mounted for ready-to-run convenience
• Large-Scale Steering Servo: Provides high torque for the wide tyres and heavy chassis
• Waterproof Electronics: ESC, receiver box and servo are designed for wet-condition use
• Sealed Ball Bearings: Protect rotating components from dirt and moisture
• Ready-to-Run Assembly: Motor, ESC, servo, receiver, wheels and tyres are factory installed

Specifications

• Brand: Traxxas
• Model: XRT 8S
• Manufacturer Part Number: 78086-4
• Blue Colour Reference: 78086-4BLUE
• Colour: Blue
• Product Type: Electric RC X-Truck
• Vehicle Style: Large-scale race truck and truggy
• Scale Classification: 1/6
• Traxxas Size Classification: X-Truck
• Assembly Level: Ready to run
• Skill Level: 5
• Drive System: Full-time shaft-driven 4WD
• Power Source: Electric brushless
• Length Including Wing: 798mm
• Width: 595mm
• Front Track: 595mm
• Rear Track: 595mm
• Height at Ride Height: 258mm
• Height at Full Droop: Approximately 308mm
• Wheelbase: 480mm
• Ground Clearance: 49mm
• Approximate Weight Without Body or Batteries: 8.94kg
• Approximate Weight with Body: 9.54kg
• Approximate Running Weight with Two 4S 6700mAh Batteries: 10.83kg
• Motor: Velineon 1200XL sensorless brushless motor
• Motor Rating: 1275kV
• Motor Length: Approximately 110mm
• Motor Diameter: Approximately 48mm
• Electronic Speed Controller: Velineon VXL-8s waterproof brushless ESC
• Maximum Battery Input: 8S LiPo
• Full-Power Battery Configuration: 2 × matching 4S LiPo batteries
• Reduced-Power Battery Configuration: 2 × matching 3S LiPo batteries
• Battery Connectors: Dual Traxxas High-Current connectors
• Battery Tray Size: 186mm × 51mm × 44mm each
• Radio System: TQi 2.4GHz transmitter and TSM receiver
• Steering System: Dual-bellcrank steering
• Steering Servo Torque: Approximately 365oz-in at 6.0V
• Steering Servo Speed: Approximately 0.17 seconds per 60 degrees at 6.0V
• Differentials: Sealed hardened-steel bevel-gear limited-slip differentials
• Centre Drive: Torque-Biasing Centre Drive with cush drive
• Suspension: Four-wheel independent long-travel suspension
• Shocks: 173mm aluminium GTX oil-filled coilover shocks
• Tyres: Pre-glued Gravix race tyres
• Approximate Tyre Size: 188mm × 97mm
• Approximate Wheel Size: 110mm × 147mm
• Wheel Hex: 24mm splined
• Gear Pitch: Module 1.0
• Standard Motor Gearing: 20-tooth pinion and 50-tooth spur
• Standard Overall Drive Ratio: 20.6:1
• Advertised Maximum Speed: Over 60mph on 8S with included optional gearing

Compatibility

• Compatible with two matching Traxxas 4S LiPo batteries for full 8S performance
• Compatible with two matching Traxxas 3S LiPo batteries for reduced 6S performance
• Battery packs must fit within the 186mm × 51mm × 44mm battery trays
• Compatible with Traxxas High-Current battery connectors
• Compatible with Traxxas EZ-Peak Live chargers rated for 3S and 4S LiPo batteries
• Compatible with the Traxxas Link Wireless Module for supported mobile-device adjustment
• Compatible with genuine Traxxas XRT replacement and upgrade components
• Compatible with suitably sized XRT wheels using 24mm splined hexes
• Replacement wheels and tyres must provide suitable body, suspension and steering clearance

Includes

• 1 × Traxxas XRT 8S 4WD RTR X-Truck in blue
• 1 × Blue pre-painted clipless body with internal support cage
• 1 × Installed Velineon 1200XL brushless motor
• 1 × Installed VXL-8s waterproof brushless ESC
• 1 × Installed large-scale waterproof steering servo
• 1 × TQi 2.4GHz transmitter
• 1 × TSM-equipped receiver
• 4 × Factory-mounted Gravix tyres and wheels
• 1 × Installed rear wing
• Optional high-speed gearing
• High-quality maintenance tools
• Quick-start guide and product documentation

Required to Complete

• 2 × Matching 4S LiPo batteries for full 8S performance
• Alternatively, 2 × matching 3S LiPo batteries for reduced 6S performance
• Compatible LiPo balance charger
• 4 × AA batteries for the transmitter

FAQ

Does the Traxxas XRT include batteries and a charger? No. Two matching LiPo batteries, a compatible balance charger and four AA transmitter batteries are required separately.

Can the XRT run on two 3S batteries? Yes. Two matching 3S LiPo batteries provide 6S operation with reduced acceleration and top speed. Two matching 4S packs are required for full 8S performance.

Can different battery packs be mixed? No. Both batteries should have the same cell count, capacity, discharge rating, age, condition and charge level.

Will any 4S battery fit? No. Each battery must fit securely within the 186mm × 51mm × 44mm tray and use a compatible connector. Confirm the battery dimensions before ordering.

How fast is the Traxxas XRT? Traxxas rates the XRT for speeds exceeding 60mph when using two suitable 4S LiPo batteries and the included optional high-speed gearing. Actual speed varies with gearing, battery condition, surface and temperature.

Is the optional gearing suitable for normal off-road use? The high-speed gearing is intended for controlled speed runs on firm, open surfaces. Standard gearing is more suitable for grass, loose dirt, repeated acceleration and jumping.

What is the difference between the XRT and X-Maxx? The XRT has a lower body, wider stance, lower centre of gravity and more handling-focused tyres and suspension setup. The X-Maxx has greater ground clearance and a more traditional monster-truck configuration.

Is the XRT a truggy or monster truck? It combines elements of both. Traxxas classifies it as an X-Truck, while retailers often describe it as a large-scale race truck or truggy because of its low-profile body and wide handling-focused chassis.

Does the XRT have belted tyres? The standard 78086-4 is supplied with Gravix race tyres rather than the factory-belted Sledgehammer tyres used on the updated X-Maxx. Do not describe the standard XRT tyres as belted unless the fitted tyre set has been changed.

Does it include Traxxas Stability Management? Yes. TSM provides adjustable steering assistance to help maintain control on loose or slippery surfaces.

Is telemetry included? The VXL-8s system supports integrated telemetry. Displaying and adjusting data through a compatible mobile device requires the separately available Traxxas Link Wireless Module.

Is the XRT waterproof? The installed ESC, receiver box and steering servo are designed for wet-condition use. The truck must still be cleaned, dried and maintained after exposure to water or mud.

Is the XRT suitable for beginners? Its ready-to-run construction is straightforward, but the size, weight and speed make it an advanced high-performance vehicle. New drivers should begin on 6S or use reduced-power settings in a large clear area.

Why should motor and ESC temperatures be monitored? High gearing, heavy tyres, long grass, warm weather and repeated acceleration can increase operating temperatures. Stop and allow the power system to cool if performance drops or components become excessively hot.

Can the XRT self-right itself? The standard XRT supports Traxxas self-righting. Use the function only briefly and retrieve the truck manually if it does not recover, as repeated attempts can place additional load on the drivetrain.

Important Notes

• The drive batteries, charger and four AA transmitter batteries are not included.
• Use two matching batteries with identical cell count, capacity, discharge rating and condition.
• Never combine a 3S battery with a 4S battery.
• Confirm battery dimensions before purchase; each tray measures 186mm × 51mm × 44mm.
• Use a compatible LiPo balance charger and the correct charging program.
• Never charge LiPo batteries unattended.
• Do not charge or operate a swollen, damaged, punctured or excessively hot battery.
• The advertised 60mph-plus speed requires two suitable 4S batteries and optional high-speed gearing.
• High-speed gearing can substantially increase motor and ESC temperatures.
• Use standard gearing for grass, loose terrain, jumping and repeated acceleration.
• Monitor power-system temperatures regularly in warm Australian conditions.
• Inspect the tyres, wheel nuts, driveshafts and suspension before every high-speed session.
• The XRT weighs more than 10kg with typical batteries installed and can cause serious injury or property damage.
• Operate only in a large clear area away from people, animals, roads, vehicles and fragile property.
• Waterproof electronics do not remove the need for cleaning, drying and lubrication after wet use.
• Avoid salt water because it can rapidly corrode bearings, hardware and electrical connections.
• Optional batteries, chargers, telemetry accessories and upgrades shown in promotional images are sold separately.