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

Overview

The Traxxas Unlimited Desert Racer Pro-Scale 4WD 1:10 RTR Brushless Electric Short Course Truck with FOX Racing graphics represents the pinnacle of authentic RC desert racing performance. This ready-to-run brushless RC truck combines genuine pro-scale styling with extreme 6S LiPo power, delivering speeds exceeding 50 mph straight out of the box. Whether you're an experienced RC enthusiast looking for a high-performance trophy truck or a dedicated racer seeking competition-grade equipment, the UDR FOX Edition delivers uncompromising performance and visual authenticity that captures the essence of full-scale unlimited desert racing.

Built by Traxxas, one of the world's most recognised RC manufacturers, this pro-scale RC vehicle faithfully replicates the look and feel of real Trophy Trucks and Unlimited Trick Trucks as they charge across desert terrain at full speed. The UDR isn't just about looks—it's engineered on an authentic, true-to-scale 4-wheel drive desert race truck chassis that delivers genuine driving dynamics alongside brutal 6S power. This is a ready-to-run RC truck that requires only batteries and a charger to begin racing, making it an ideal choice for those seeking immediate performance without assembly hassle.

As a genuine 1:7 scale model measuring 27.32 inches in length with a 16.53-inch wheelbase, the UDR provides substantial size and presence that matches its performance credentials. The brushless RC construction with waterproof electronics means you can confidently drive in varied conditions, whilst the integrated LED lighting system featuring 204 individual high-intensity LEDs creates an impressive visual spectacle during dusk or night-time runs. For UK RC enthusiasts seeking a high-performance, feature-rich brushless RC off-road truck with authentic styling and proven reliability, the Traxxas UDR FOX Edition stands as an exceptional choice.

Key Features

• Pro-Scale Design with Authentic Trophy Truck Styling — The UDR captures true-scale realism with a detailed tube-frame chassis, integrated roll cage, spare tyre details, and exclusive FOX Racing graphics that make this one of the most visually impressive RC trucks available, delivering both aesthetic appeal and functional authenticity that appeals to serious RC collectors and racers alike.
• VXL-6s Brushless Power System with 2200 kV Motor — The waterproof Velineon VXL-6s ESC combines massive power handling with advanced telemetry features, paired with a highly efficient 2200 kV brushless motor that delivers the extreme performance needed to achieve 50+ mph speeds when powered by 6S LiPo batteries, ensuring consistent throttle response and durability.
• 50+ mph Performance with 6S LiPo Power — This ready-to-run brushless RC truck achieves exceptional speeds exceeding 50 mph with dual 3S LiPo batteries, or can run at 30+ mph with 4S configuration, offering flexibility in power options whilst maintaining race-inspired acceleration and top-end performance that demands proper control systems and driving skill.
• Traxxas Stability Management (TSM) Technology — The integrated TSM receiver works with the TQi 2.4 GHz radio system to enhance control and stability during high-speed runs, automatically correcting oversteer and understeer tendencies to help drivers maintain control and improve consistency, particularly valuable when exploring the truck's extreme performance envelope.
• 4-Link Solid Rear Axle Suspension Design — The authentic 4-link solid rear axle provides maximum off-road traction and delivers huge suspension travel for extreme terrain, faithfully reproducing the suspension geometry of full-scale desert race trucks whilst maintaining practical drivability on varied off-road surfaces including sand, gravel, and rocky terrain.
• Long-Travel GTR Shocks with Superior Damping — Eight GTR shocks provide superior damping characteristics and extended travel capabilities, allowing the UDR to absorb impacts from aggressive off-road driving whilst maintaining chassis control, essential for maintaining speed through rough desert terrain and jumps.
• TQi 2.4 GHz Radio System with Advanced Features — The included TQi 2.4 GHz 2-channel transmitter with TSM receiver offers fail-safe protection, telemetry compatibility for advanced setup and tuning, and programmable features that allow drivers to customise throttle curves, steering response, and stability settings to match their driving style and terrain preferences.
• Heavy-Duty Steel Drivetrain with Torque-Biasing Centre Drive — The ultra-tough drivetrain harnesses extreme power with precision engineering, featuring sealed differentials (4-gear front with 1M weight oil, locked spool rear) and torque-biasing centre differential that distribute power efficiently to all four wheels, ensuring durability and reliability under extreme racing conditions.
• Fully Integrated LED Lighting System — The complete 204-LED lighting package creates dramatic visual impact and improves visibility during low-light operation, featuring high-intensity LEDs that consume minimal battery power whilst providing authentic scale lighting that mimics real desert race trucks during night-time events.
• Waterproof Electronics for All-Weather Operation — All critical electronics including the VXL-6s ESC and servo systems are fully waterproofed, allowing confident operation in wet conditions, muddy terrain, and challenging weather, expanding the seasons and conditions where you can enjoy your RC truck without risk of electrical damage.
• Clipless Body Mounting System — The innovative clipless body attachment provides easy, secure mounting and quick removal for maintenance and customisation, eliminating the need for traditional screws or fasteners and allowing drivers to change body panels or access internal components in seconds.
• Low-CG Tube Chassis with Skid Plates — The tube-frame chassis design maintains a low centre of gravity for improved stability and cornering performance, whilst integrated skid plates protect critical drivetrain and suspension components from rock strikes and terrain damage during aggressive off-road driving.
• Sealed, Direct-Drive Transmission with 17.89:1 Ratio — The sealed direct-drive transmission with torque-biasing centre differential and 17.89:1 internal gear ratio delivers efficient power transfer whilst maintaining the low-maintenance simplicity that ready-to-run RC trucks require, with sealed differentials protecting internal components from dust and debris.
• 2075R Metal Gear Digital Servo — Two metal gear digital high-torque waterproof servos provide precise steering input and reliable performance, offering waterproof construction to match the truck's all-weather capabilities and digital precision for consistent, repeatable control across varying terrain and driving conditions.
• Substantial 13.4 lb Weight for Stability — The 6.1 kg (13.4 lb) complete weight provides excellent mass for maintaining traction and momentum whilst remaining light enough for responsive handling, offering the balance between inertia-assisted jumping and agile directional changes that serious RC drivers require.

Technical Performance

The Traxxas Unlimited Desert Racer represents an exceptional engineering achievement in pro-scale RC vehicle design. Measuring 27.32 inches in length with a 16.53-inch wheelbase and standing 10.29 inches tall, the UDR combines substantial presence with meticulous scale accuracy. The complete vehicle weighs 13.4 pounds, distributing this mass across a wide 13.57-inch front and rear track that maximises cornering grip and stability. The brushless drivetrain features a waterproof Velineon VXL-6s ESC paired with a highly efficient 2200 kV brushless motor, delivering power through a sealed, direct-drive transmission with 17.89:1 internal gear ratio and 32-pitch gearing. This configuration achieves speeds exceeding 50 mph when powered by dual 3S LiPo batteries (6S total), or 30+ mph with 4S configuration, providing flexibility in power setup. The front suspension employs double-wishbone geometry with cantilever sway bars, whilst the rear features an authentic 4-link solid axle design with sealed differentials (4-gear front, locked spool rear, 4-gear centre) that ensures maximum traction across varied terrain. Eight GTR shocks with superior damping characteristics provide extensive suspension travel, essential for absorbing impacts from aggressive off-road driving. The 2.27 inches of ground clearance allows confident navigation of rocky and uneven surfaces. The TQi 2.4 GHz 2-channel radio system with Traxxas Stability Management technology offers 2.4 GHz frequency precision, fail-safe protection, and telemetry compatibility for advanced tuning. Two 2075R metal gear digital high-torque waterproof servos ensure precise steering control. Battery compartment dimensions of 181 mm × 46 mm × 56 mm accommodate standard 3S and 4S LiPo configurations. Fully waterproof electronics allow operation in wet conditions, whilst the 204-LED lighting system provides visibility and visual impact during any driving session. UK RC enthusiasts will appreciate the complete integration of performance engineering, scale authenticity, and reliable Traxxas construction quality that makes this brushless RC truck suitable for both competitive racing and recreational off-road exploration.

What's in the Box

• Unlimited Desert Racer UDR model with factory-installed VXL-6s ESC and 2200 kV Velineon brushless motor
• TQi 2.4 GHz 2-channel radio system with TSM receiver
• Integrated LED lighting system with 204 high-intensity LEDs
• Maintenance and adjustment tools

What You Need to Complete

• Dual 3S LiPo batteries (7.4V) for 6S configuration, or single 4S LiPo battery minimum
• Compatible LiPo battery charger (dual-rate charger recommended for flexibility)
• Four AA alkaline batteries for the transmitter
• Optional: LiPo safety charging bag for safe battery storage and charging

Frequently Asked Questions

• Is the Traxxas UDR suitable for beginners learning to drive RC trucks? — Whilst the UDR is an exceptionally well-engineered ready-to-run brushless RC truck, the manufacturer rates it as Skill Level 5, indicating it requires experienced RC driving skills to control safely at its 50+ mph maximum speed. The extreme performance and powerful 6S drivetrain demand proper understanding of throttle control, steering response, and terrain awareness. However, new RC drivers can operate it safely at reduced battery configurations (4S) or in large open spaces, using TSM stability management to build confidence. Beginners are encouraged to start with lower-power RC trucks before progressing to the UDR's extreme performance level.
• What battery configuration does this brushless RC truck require? — The Traxxas UDR operates with either dual 3S LiPo batteries (7.4V each, totalling 6S/14.8V) for maximum 50+ mph performance, or a single 4S LiPo battery (14.8V) for slightly reduced but still impressive 30+ mph performance. The battery compartment measures 181 mm × 46 mm × 56 mm, accommodating standard LiPo packs from reputable manufacturers. The VXL-6s ESC is fully LiPo-ready with integrated protection circuitry, though a quality charger with LiPo-specific profiles is essential for safe, efficient battery management.
• How fast does the Traxxas UDR FOX Edition go? — With dual 3S LiPo batteries providing 6S power, the UDR exceeds 50 mph, making it one of the fastest ready-to-run RC trucks available. Performance varies based on terrain, driving technique, and battery condition, with rough or sandy surfaces naturally reducing top speed compared to smooth hardpan. The 4S single-battery configuration delivers 30+ mph, still providing rapid, exhilarating performance suitable for most RC tracks and terrain.
• Is this RC truck waterproof for wet conditions? — Yes, the Unlimited Desert Racer features fully waterproof electronics including the VXL-6s ESC, servo systems, and radio receiver, allowing confident operation in wet terrain, muddy conditions, and light rain. However, the LED lighting system, whilst weatherproof, should not be submerged in water. After wet-condition driving, allow the truck to dry completely before storing to prevent potential long-term corrosion, and rinse away mud or salt water to maintain component longevity.
• What makes the Traxxas UDR different from other high-performance RC trucks? — The UDR's unique selling points include its exceptional 1:7 pro-scale realism that faithfully replicates full-scale Trophy Trucks and Unlimited Trick Trucks, combined with the authentic 4-link solid rear axle suspension design that delivers genuine driving dynamics rather than simplified RC approximations. The inclusion of 204 integrated LED lights, waterproof electronics throughout, and the TQi radio system with TSM stability management creates an integrated package that prioritises both performance and user experience. The heavy-duty steel drivetrain and sealed differentials ensure durability under extreme conditions, whilst the cantilever sway bars and eight GTR shocks provide suspension sophistication rarely seen in ready-to-run RC trucks.
• What is included and what additional items are required? — The box includes the fully assembled and RTR-ready UDR with motor and ESC installed, the TQi 2.4 GHz radio system, integrated LED lighting, and basic maintenance tools. To operate the truck, you must purchase dual 3S LiPo batteries (or one 4S), a compatible LiPo charger, and four AA alkaline batteries for the transmitter. Optional but recommended additions include a LiPo safety charging bag, a high-capacity dual-rate charger for flexibility, and spare batteries to extend running time.
• Can this brushless RC truck handle rough desert terrain? — The UDR is specifically engineered for desert racing conditions, featuring the 4-link solid rear axle suspension, eight long-travel GTR shocks, and sealed differentials that provide maximum traction and impact absorption on rocky, sandy, and uneven terrain. The 2.27 inches of ground clearance and low-CG tube chassis with skid plates protect critical components whilst allowing aggressive off-road driving. The waterproof electronics and durable steel drivetrain ensure reliable operation across demanding desert environments that would challenge less robust RC trucks.
• What radio system and frequency does the Traxxas UDR use? — The UDR includes Traxxas' proprietary TQi 2.4 GHz 2-channel radio system with TSM receiver, offering 2.4 GHz frequency precision that eliminates interference issues common with older 27 MHz or 75 MHz systems. The system features fail-safe protection that cuts throttle if the signal is lost, telemetry compatibility for monitoring battery voltage and motor temperature, and programmable settings allowing customisation of steering exponential, throttle curves, and TSM sensitivity to match driver preferences and terrain conditions.
• Is the Traxxas UDR RTR (ready to run)? — Yes, the UDR is a complete ready-to-run brushless RC truck, arriving fully assembled with the motor, ESC, servo systems, and radio receiver installed and calibrated. You simply require batteries, a charger, and AA transmitter batteries to begin driving immediately, eliminating the assembly and setup work required with kit-based RC trucks.
• What suspension system does the UDR feature? — The suspension combines a double-wishbone front design with cantilever sway bars for independent control and responsive handling, paired with an authentic 4-link solid rear axle that maximises traction and replicates full-scale desert truck suspension geometry. Eight GTR shocks throughout provide superior damping and extensive travel, whilst sealed differentials (4-gear front with 1M weight oil, locked spool rear, 4-gear centre) ensure efficient power distribution. This suspension design allows the UDR to absorb impacts from jumps and rough terrain whilst maintaining precise control and predictable handling characteristics.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the 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 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.