Traxxas Unlimited Desert Racer Pro-Scale 4WD 1:10 RTR Brushless Electric Short Course Truck, FOX Racing (+ TQi 2-ch, TSM, VXL-6s, Velineon 2200kV, LED lights) TRX85086-4-FOX1

Technical Specifications

• Model: Traxxas Unlimited Desert Racer UDR – FOX Racing Edition (TRX85086-4-FOX1)
• UPC: 020334051073
• Scale/Type: 1/7 Pro-Scale 4WD Off-Road Desert Truck
• Length: 694 mm (27.32") – provides true long-wheelbase stability for high-speed off-road racing
• Width: 345 mm (13.57") – wide track stance for improved cornering and balance
• Height: 261 mm (10.3") – realistic profile with roll cage and spare tire details
• Wheelbase: 420 mm (16.53") – extended wheelbase improves handling and Pro-Scale realism
• Ground Clearance: 58 mm (2.28") – allows aggressive off-road performance on varied terrain
• Weight: 6.1 kg (13.4 lbs) – substantial build for stability while maintaining agility
• Motor: Velineon 2200 kV brushless – delivers efficient, high-torque power for 6S setups
• ESC: VXL-6s Waterproof Brushless Electronic Speed Control – LiPo ready, supports up to 6S power
• Max Speed: 50+ mph – achievable with dual 3S LiPo packs (6S total)
• Radio System: TQi 2.4 GHz with Traxxas Stability Management (TSM) and telemetry readiness
• Lighting: Fully integrated LED light kit (204 LEDs) – includes headlights, roof lights, and tail/brake lights
• Suspension: Independent double-wishbone front and solid rear axle with 4-link design and aluminum GTR shocks
• Drivetrain: 4WD shaft-driven system with torque-biasing center drive, solid rear axle, and steel drivetrain components
• Chassis: Tube-frame design with scale roll cage and skid plates for protection
• Body: Pro-Scale tube-frame with detailed cabin, spare tires, and FOX Racing graphics
• Battery Requirements: Dual 2S or 3S LiPo packs, or single 4S LiPo pack (batteries and charger sold separately)
• Transmitter Batteries: Requires 4 × AA (not included)

The Traxxas TRX85086-4-FOX1 Unlimited Desert Racer 4WD RTR in Fox Racing livery is a purpose-built short course truck engineered for true-to-scale desert racing performance. Designed with Pro-Scale realism and powered by a brutal 6s brushless system, this model captures the aggressive stance, suspension geometry, and drivetrain layout of full-size Trophy Trucks. From its solid rear axle and torque-biasing centre drive to its LED lighting system and clipless body mounting, the Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with solid rear axle and torque-biasing centre drive delivers an immersive driving experience that blends scale detail with high-speed control. Whether you're tearing across open terrain or navigating technical off-road sections, this Fox Racing edition offers unmatched realism and rugged capability.

Key features of the Traxxas Unlimited Desert Racer TRX85086-4-FOX1

• Pro-Scale chassis – replicates full-size desert race truck geometry and dynamics
• VXL-6s brushless power system – delivers 50+ mph speed with 6s LiPo compatibility
• Solid rear axle – maximises traction and suspension travel for off-road control
• Torque-biasing centre drive – distributes power efficiently across all four wheels
• GTR shocks – provide superior damping for extreme terrain handling
• Clipless body mounting – secure fit with fast access to internal components
• LED lighting system – includes 204 individual LEDs for enhanced visibility and scale realism
• Heavy-duty steel drivetrain – ensures durability under high torque loads
• Waterproof electronics – enable all-weather operation and trail reliability
• TSM stability management – improves control during high-speed runs and cornering

How does the Pro-Scale chassis enhance realism and performance?

The Pro-Scale chassis on the Traxxas TRX85086-4-FOX1 Unlimited Desert Racer 4WD RTR is more than just a visual replica—it’s a functional recreation of full-size desert race truck architecture. With a 4-link solid rear axle and cantilever sway bars, the suspension geometry mirrors real-world dynamics, allowing for massive travel and authentic handling. The chassis layout supports aggressive driving over rough terrain while maintaining scale proportions and balance. This design ensures that the driving experience feels grounded and realistic, making the model ideal for enthusiasts who value both performance and detail.

Why is the VXL-6s brushless system a game changer?

At the heart of the Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with solid rear axle and torque-biasing centre drive lies the VXL-6s brushless power system. Capable of handling dual 3s or 4s LiPo batteries, this setup unleashes over 50 mph of raw speed. The 2200 kV motor works in tandem with the VXL-6s ESC to deliver smooth throttle response, high torque output, and advanced telemetry features. This combination allows for precise control even at high speeds, making the truck both thrilling and manageable. Whether you're racing across open desert or tackling uneven terrain, the brushless system ensures consistent power delivery and responsiveness.

What makes the solid rear axle and torque-biasing centre drive ideal for off-road racing?

The solid rear axle on the Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with solid rear axle and torque-biasing centre drive is engineered to maximise traction and suspension articulation. Unlike independent setups, the solid axle maintains consistent contact with the ground, improving grip and stability on loose surfaces. Paired with the torque-biasing centre drive, power is distributed efficiently across all four wheels, reducing wheelspin and enhancing control. This drivetrain configuration is particularly effective in desert racing scenarios, where terrain varies rapidly and traction is critical. Together, these features provide a competitive edge in both speed and handling.

Clipless body mounting and LED lighting for functional realism

The clipless body mounting system offers a secure and streamlined solution for accessing internal components. Hidden latches keep the body firmly in place during aggressive driving, while allowing for quick removal when needed. This design preserves the clean lines of the Fox Racing shell and improves usability. Complementing the body system is a full LED lighting array featuring 204 individual LEDs. These lights not only enhance visibility during low-light runs but also contribute to the scale realism that defines the Traxxas TRX85086-4-FOX1 Unlimited Desert Racer 4WD RTR. From headlights to brake lights, every detail is crafted to replicate the look of a full-scale race truck.

How do GTR shocks and waterproof electronics improve trail performance?

GTR shocks are designed to handle the extreme suspension travel required for desert racing. Their superior damping characteristics allow the Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with solid rear axle and torque-biasing centre drive to absorb impacts and maintain stability over rough terrain. These shocks work in harmony with the chassis to deliver a smooth and controlled ride. Additionally, the waterproof electronics ensure that the truck remains operational in wet or muddy conditions. From the ESC to the servo, each component is sealed against moisture, allowing for all-weather reliability and extended trail sessions without compromise.

Is the Traxxas TRX85086-4-FOX1 Unlimited Desert Racer 4WD RTR suitable for high-skill drivers?

With a skill level rating of 5, the Traxxas TRX85086-4-FOX1 Unlimited Desert Racer 4WD RTR is tailored for experienced users seeking advanced performance and control. The combination of high-speed capability, complex drivetrain, and responsive handling requires a confident driver to unlock its full potential. This model is ideal for those who have mastered entry-level trucks and are ready to step into a more realistic and powerful platform. Its Pro-Scale design, brushless power, and rugged build make it one of the best choices for serious off-road enthusiasts looking to elevate their driving experience.

Affordable performance with premium features

Despite its high-end capabilities, the Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with solid rear axle and torque-biasing centre drive remains an affordable option for those seeking scale realism and desert racing performance. The inclusion of heavy-duty steel drivetrain components, advanced suspension, and stability management ensures long-term durability and control. Its Fox Racing finish adds visual appeal, while the functional features deliver value beyond aesthetics. This balance of cost and capability makes it a compelling choice for hobbyists who want premium performance without overspending.

Ready to experience true desert racing realism? Buy Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with 6s LiPo speed and steel drivetrain today and take control of Pro-Scale performance in Fox Racing style.

Brand, Model and Product Type

• Brand: Traxxas
• Model: TRX85086-4-FOX1
• Product Type: Traxxas TRX85086-4-FOX1 Unlimited Desert Racer 4WD RTR, Traxxas TRX85086-4-FOX1 Pro-Scale Short Course Truck Fox Racing, Traxxas TRX85086-4-FOX1 Desert Racer with VXL-6s Brushless Power, Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with solid rear axle and torque-biasing centre drive, Traxxas Unlimited Desert Racer TRX85086-4-FOX1 with LED lighting and clipless body mounting
• Product Colour: Fox Racing

Dimensions and Weight

• Length: 69.4 cm – extended chassis for realistic desert racing dynamics
• Width: 34.5 cm – wide track for high-speed stability and cornering control
• Height: 26.1 cm – low profile for improved aerodynamics and suspension travel
• Wheelbase: 42.0 cm – optimised for scale realism and responsive handling
• Front Track: 34.5 cm – matched with rear for balanced performance
• Rear Track: 34.5 cm – supports solid axle configuration for maximum traction
• Centre Ground Clearance: 5.8 cm – suitable for desert terrain and obstacle clearance
• Weight: 6.1 kg – heavy-duty build supports high-speed stability and durability

Drivetrain and Transmission

• Drive System: Shaft-driven 4WD – delivers consistent power across all wheels for off-road control
• Transmission: Direct-drive with torque-biasing centre drive – ensures efficient power distribution and responsive acceleration
• Differential Type: Sealed 4-gear front, locked spool rear, sealed 4-gear centre with 1M weight oil – tailored for desert racing traction and control
• Internal Gear Ratio: 17.89:1 – tuned for torque and speed balance
• Gear Pitch: 32 pitch – durable gearing for high-power brushless systems

Suspension and Steering

• Suspension Design: 4-link solid rear axle with cantilever sway bars – replicates full-scale race truck geometry
• Shock System: 8 GTR shocks – provide superior damping and extreme suspension travel
• Steering Servo: 2075R metal gear, digital high-torque waterproof – ensures precise control under demanding conditions

Electronics and Power System

• ESC: VXL-6s – supports dual 3s or 4s LiPo batteries for 50+ mph performance
• Motor: 2200 kV brushless – delivers high-speed output with smooth throttle response
• Radio System: TQi 2.4 GHz 2-channel transmitter – includes Traxxas Stability Management for enhanced control
• Receiver: TSM-enabled – improves handling and reduces loss of traction
• Waterproof Electronics: ESC, servo and receiver – allow for reliable operation in wet and dusty environments

Body and Exterior

• Body Mounting: Clipless system – secure fit with fast access to internal components
• Lighting System: 204 individual LEDs – includes headlights, brake lights and accent lighting for scale realism
• Finish: Fox Racing – bold and authentic race-inspired graphics

Battery and Charging

• Battery Compatibility: Dual 3s or 4s LiPo packs – supports extreme power configurations
• Battery Compartment Dimensions: 18.1 cm x 4.6 cm x 5.6 cm – accommodates high-capacity packs
• Transmitter Power: Requires four AA alkaline batteries – easy to replace and widely available

Included in the Box

• Unlimited Desert Racer model with VXL-6s ESC and 2200 kV motor – fully assembled and ready to run
• TQi 2.4 GHz radio system – provides responsive control and stability management
• Maintenance tools – essential for setup and adjustments

We want to make sure your delivery goes smoothly, so here are some important details about our service:

• For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
• Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
• Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
• If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
• We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
• As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
• If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
• For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.