Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox) w/LED Lights & TQi 2.4GHz Radio

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Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
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Price: $699.95

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This is the Traxxas Unlimited Desert Racer "Fox" Style UDR 6S RTR 4WD Electric Race Truck, along with TQi 2.4GHz Radio & LED Lights is Race Truck is a true to scale 4-wheel drive desert race truck. The 4-link solid rear axle design provides huge suspension travel with authentic driving dynamics. From the cantilever sway bars to the 8 GTR shocks, Traxxas has accurately reproduced a true unlimited desert race chassis in both form and function. Attention to detail captures the look and feel of Trophy Trucks and Unlimited Trick Trucks as they charge hard across the desert at full speed.

The performance of this versatile race truck is now complemented by a high-intensity light from the rugged waterproof LED lighting system. A high-voltage amplifier powers 204 individual LEDs for brilliant light while tightly regulating the voltage to eliminate flickering and dimming. The rear light bar features class lights and smart brake lights that work when brakes are applied in either direction.



  • VXL-6s™ Waterproof Electronic Speed Control
    • 6s LiPo compatible
    • Integrated cooling fan
    • Real-time telemetry via Traxxas Link
    • Machined heat sink
    • 3-LED status indicators
    • Powered accessory ports
    • 10-gauge silicone wire
  • Velineon® 2200kV Brushless Motor
    • 4-pole 2200kV brushless motor
    • 5mm output shaft
    • Finned can for better heat dissipation
  • Up to 50+ mph with Two 3s LiPo Batteries
  • Traxxas Stability Management® (TSM)
    • Improves straight line acceleration and braking on low-traction surfaces
    • Maintains steering composure to allow throttle-on powerslides
    • Never dulls throttle or slows the truck
    • Adjusts from off to 100% assistance from the transmitter
  • TQi™ 2.4GHz High Output Radio System
    • TQi 2-channel transmitter
    • Automatically stores and loads settings for up to 30 Traxxas Link enabled models
    • Programmable multi-function knob
    • Adjustable steering and throttle percentage (dual rates)
    • Adjustable steering and throttle sensitivity (exponential)
    • Adjustable steering and throttle end points
    • High 13ms frame rate and near-zero latency for responsive control
    • 5-channel micro receiver (#6533) with fail-safe security
    • Patented waterproof receiver box with easy-access plug
  • Large Pro-Scale™ Body with Highly Detailed Replica Parts
    • Heavy-duty truck body mounts to chassis in multiple locations
    • Strong and functional tube frame mimics full-size off-road racers
    • Detailed interior cabin with driver figures
    • Replica brake calipers and discs with integrated 17mm wheel hubs
    • Two fully-functional spare tires and functional spare driveshaft
    • Highly detailed replica parts: fire extinguishers, shock reservoirs, jack, and tools
    • Realistic side plates mount to tube frame
  • Chassis
    • Composite inverted tub design
      • Makes maintenance easier
      • Lowers center of gravity (CG) for improved handling
      • Allows easy access to components
    • Tough skid plates protect critical components
    • Fully integrated tube frame for scale appearance and added rigidity
    • Reinforced bumpers to absorb impacts
    • ESC battery plugs hard mounted to chassis
  • Innovative Battery Compartment
    • Accommodates single 4-cell LiPo or dual 2-cell or 3-cell LiPo batteries
    • Opens from underneath without removing body
    • Fixed oversized battery strap locks batteries securely into place
    • Separate skid plate to protect batteries
  • Suspension
    • Provides scale looks and authentic off-road driving dynamics
    • Tough independent double-wishbone front suspension with captured rod ends
    • Triangulated 4-link rear suspension with solid rear axle (patent pending)
    • Tough composite trailing arms
    • Steel upper links with 3 optional positions for suspension tuning
    • Eight long-travel aluminum GTR shocks; four with springs and adjustable ride height collars
    • Realistic and functional front and rear sway bars
    • Detailed functional limit straps on rear axle
  • Steering
    • Chassis mounted #2075X metal-gear servo
    • Dual bellcrank design with bearings and integrated servo saver
    • Solid non-adjustable steering links for rugged durability
  • Drivetrain
    • Steel CVDs (front) with 6mm stub axles
    • Steel straight axle (rear)
    • Oil-filled limited slip front differential
    • Locked steel spool (rear)
    • Heavy-duty splined front driveshaft
    • Fixed-length steel rear driveshaft
  • Transmission
    • All-steel gear direct drive transmission
    • Torque-Biasing Center Drive™
    • Removes as a single piece for easy maintenance
    • Fixed-pin gear mesh system
  • Wheels and Tires
    • Replica BFGoodrich® KR3 off-road tires
    • Beadlock-style 17mm dual-diameter wheels
  • Sealed Ball Bearings
  • Hex Hardware with Rust-Resistant Black Oxide Coating
  • High-Voltage LED Lights
    • Dual straight LED bumper-mounted LED light bars (52 LEDs each)
    • Curved roof light bar (52 LEDs)
    • Multifunction red and amber brake light/class light bar
    • High-voltage 8-channel power amplifier for intense, brilliant LED lighting
    • Regulated output for stable lighting performance
    • (no flickering or dimming as the battery voltage changes)

 27.32 inches (694mm)  
Front Track: 13.57 inches (345mm)  
Rear Track: 13.57 inches (345mm)  
Ground Clearance: 2.27 inches (58mm)  
Weight: 13.4lb (6.1kg)  
Height: 10.29 inches (261mm)  
Wheelbase: 16.53 inches (420mm)  
Front Shock Length: 5.28 inches (134mm)  
Front Threaded Shock Length: 5.28 inches (134mm)  
Rear Shock Length: 6.3 inches (160mm)  
Rear Threaded Shock Length: 5.55 inches (139mm)  
Tires (pre-glued): 134mm x 57mm BFGoodrich® KR3 replicas  
Wheels: dual diameter 40mm x 56/81mm  
Speed Control: Velineon® VXL-6s  
Motor (electric): 2200kV


  • Unlimited Desert Racer with VXL-6s ESC and 2200kV motor
  • Quick Start Guide
  • TQi™ 2.4GHz radio system
  • High quality maintenance tools
  • LED Lighting System

Needed to Complete:  

  • Single 4s LiPo battery or dual 2s LiPo batteries or dual 3s LiPo batteries with Traxxas iD connector
  • Traxxas EZ-Peak Live charger
  • (4) AA alkaline batteries for the transmitter

This product was added to our catalog on November 26, 2019

Verified Owner
Thursday, Dec 26 2019 (about 3 years ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Truck is Great! All the right stuff but ordered accessories to make it just a little better and realistic. It may end up a little heavier but still perform great. These trucks are so realistic when making jumps.
Verified Owner
Thursday, Feb 13 2020 (about 3 years ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Great pro scale well built model. This is not a toy its very reliable and takes skill to maneuver. It will crash and roll over if you operate the model like a normal truck or other traxxas models. Its very fast and has the ability to tackle any kind of terrain surface. On pavement its very tippy and catches and flips over very easily if you do not get on the throttle and swing the rear end around like a desert racer truck woukd do. Its fun and good on battery wether you run 4s to 6s its just as good on 4s.
Verified Owner
Thursday, Feb 23 2023 (7 months ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Awsome truck probably one of the greatest rtrs that traxxas has made, for the price and quality you get I couldn't ask for more
Monday, Feb 8 2021 (about 2 years ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
This truck is amazing and goes into every detail for the scale look, but if your planning on getting one its well worth it but its built for SCALE driving and not built for big jumps on the track unlike buggies which are made for it. Don't get me wrong this thing can take one hell of a beating and for sure go on the track but when jumping, because of it's weight and the way its built is has a tendency to roll over if you land the wrong way really easily and has a tendency to nose dive or slap the back end on big jumps on landings which is what its not made to do but it sure is capable. Then one last thing to consider is that sometimes you'll hit a little dip or turn to fast and expect to roll over maybe once or flip in the air, but with this truck you end up doing barrel roll after barrel roll or endowing over and over several times which is exciting to watch, so expect to flip, roll, or endow more times than usual on the smallest accidents, but don't worry as long as you weren't hauling ass while you flipped the truck will be fine even though the crash will not make it look fine. Overall this truck is great and is made for a person who likes to drive Scale and have that scale experience with the wight of the truck. (BTW: this truck only takes long and skinny traxxas connector capable 2&3 cell lipos, no short and fat lipos because you can't stack the short and fat ones together only the long and skinny ones can stack nicely and fit into the battery compartment. And if you know how to handle two 3 cells, get it because its much more fun with two 3 cells than two 2-cells but if your just starting out i recommend two 2 cells so you have a less likely chance of crashing your vehicle.)
Verified Owner
Tuesday, Sep 19 2023 (2 weeks ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
The best looking rc truck ever created. The detail is epic and with a little time and work those details can be detailed to add to the realistic features on the truck. The aftermarket has plenty of bits and pieces to further the realism.
This truck is definitely not a basher nor track vehicle , but can make a few laps around the track and look good doing it . It performs well in loose dirt and rough terrain. Corners on a tight technical course is not it’s strong suit, but does well on sweeping corners.
This truck is definitely an enthusiast dream , as it handles and drives like a real truck . Seeing the body roll , suspension working and dirt flying all match the realistic look of this truck. The chase light and functional brake light is an awesome touch.
Verified Owner
Wednesday, Aug 30 2023 (5 weeks ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
What an awesome kit. I've been upgrading as parts begin to wear, but overall, right out of the box, this thing can haul. It is a great addition to any fleet.
Verified Owner
Monday, Jul 10 2023 (3 months ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Awesome truck on 6s! Only complaint the lights don’t work, go figure. Warranty hear I come.
Verified Owner
Sunday, Jun 18 2023 (4 months ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
This has got to be the best-scale Baja truck ever. My favorite truck to this date. Tons of power and great handling. The body does take a pounding so not too bad. It rips!
Verified Owner
Wednesday, May 17 2023 (5 months ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Wicked neat truck.
It is almost a 1:1 replica of a Unlimited class trophy truck, it is a masterpiece of engineering and everything works together so amazingly its wild.
•Dual shock package front and rear, Full AWD system with IFS and Trailing arms, so much power even on the 2s lipos!
Verified Owner
Saturday, Mar 4 2023 (7 months ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Love the truck super glad I bought it from you guys you’re team was very helpful and polite
Verified Owner
Friday, Dec 9 2022 (10 months ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Really nice truck, drives and looks great. Not a basher so if you like some challenging scale driving this is it. I save the bashing for the xmaxx. Never have an issue with amainhobbies, they sell great products and I always receive them promptly.
Verified Owner
Thursday, Oct 27 2022 (11 months ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
The UDR been around for a while, so you don’t need me to tell you the truck is freaking amazing. I will say this though, I ordered this on a Saturday night and it arrived on a Thursday the following week. Awsome
Monday, Apr 4 2022 (about a year ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
This truck is fantastic. The videos on YouTube comparing it to the Mojave etc are fun, but this truck really isn’t a “basher”.

If you want a scale truck - solid rear axle - long trailing arms - realistic action etc, then you should grab this truck!

This thing REALLY utilizes the locked rear axle to maintain traction during fast acceleration.

If you just want a fun larger scale short course style truck to rip around with and ramp etc then I’d point you towards the Mojave. But for scale realism and tons of power out of the box, this is a fantastic truck!
Verified Owner
Tuesday, Feb 15 2022 (about a year ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
I loved this truck so much I bought another one. If you want the ultimate in scale realism of a desert racing Trophy truck this is the one. I also own a Mojave, which is a total blast, but the UDR behaves and looks just like a real truck. The electronics are actually really great from the go. The steering servo is fine, and all my stock gear is still running strong for over two years now. There are a few things to upgrade over time as they wear out, but all-in-all, the UDR is hands down my favorite truck.
Friday, Aug 27 2021 (about 2 years ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
nothing is perfect in this world but this truck is awesome and one of a kind RC race truck.
Saturday, Apr 17 2021 (about 2 years ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
This truck is bad-to-the-bone. It's an extreme rc and easily one of the most scale rides ever made. On 6s it's got the Devil in it.
Verified Owner
Saturday, Nov 7 2020 (about 2 years ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
I am very pleased with this model it was purchased for my grandson because of its durability and driver aids. This allows younger drivers or beginners with supervision to safely use this Rc Truck. I like that there are a lot of support products for for repairs or upgrades, it is however not for the beginners due to the fact that the directions or the parts list it’s not laid out like a model that you build, unlike a traditional nitro or electric kit where you can go step-by-step on how assemble it. My biggest complaint is that for the money you should have detailed directions for this Rc truck for purpose of repair and operation. This would allow most people with the basic tools to really enjoy this Rc. The quality of construction and materials used is very good, there are some items that could use improved quality control or better quality materials that would improve the overall build.

The directions or instructions that you get with this model RC is its biggest Problem, they are not very thorough or very detailed and that’s why I believe this is for someone with experience in the Rc Hobby. I had to call the manufacture because I was unable to turn off the truck with the speed controller and I was unable to program the truck for my grandson. The current model of this truck the batteries have to be unplugged to get the electronic speed controller to turn off that is because there is a drain on the batteries because of the previous firmware or programming so they decided to just have Us unplug the battery that is Not Ok for an $800.00 Rc vehicle. They send a reminder in the battery storage area stating that you should puncture the tires so that dirt that gets trapped in the tire can be thrown off during normal operation, at the very least each update or change to any of the operating features for this vehicle they should have paperwork that would explain what to expect when purchasing this vehicle for proper operation.

Last but not least I have decades of experience starting from Estes rockets and hand built Rc planes to our current RTR variety of Rc vehicles. This by far is the most accurate most detailed RTR RC truck that you can buy on the market. There is no other truck that you can buy that shows the kind of detail and or that has the ability to upgrade that this vehicle has, if only I had something like this growing up! This by far with a few exceptions is probably the best way to introduce a young man or young lady into Rc modeling. The only thing better would be to build this as a kit so that the builder would understand how everything functions and operates in My Humble Opinion.
Verified Owner
Saturday, Apr 4 2020 (about 3 years ago)
Traxxas Unlimited Desert Racer UDR 6S RTR 4WD Race Truck (Fox)
Awesome truck only problem was twisted front drive shaft in two on aecond outting no biggie gsm metal driveshaft back in business more fun than a barrel of monkies sorry gpm driveshaft and also love the ilink if u plan on keeping the transmitter that comes w it turns ur phone into telemtry readout for 35 bucks