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UDIRC SIERRA PRO UD1203PRO 1/12 4WD Brushless RTR RC Trophy Truck
2S/3S Compatible4WD52+ MPH60A ESCBrushlessCenter DifferentialRTR
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UDIRC SIERRA PRO UD1203PRO 1/12 4WD Brushless RTR RC Trophy Truck
Sale price$269.99 USD
Regular price$369.99 USD
60A ESC for Explosive Speed & Instant Throttle Response
Paired with a high-speed brushless motor, the 60A electronic speed controller provides rapid acceleration and precise control. Experience instant throttle response and stable power delivery even at high speeds.
2845 Brushless Motor for High-Speed Performance
Powered by a 2845 4700KV brushless motor, the UD1203PRO delivers strong acceleration, high efficiency, and impressive top speeds. Designed for performance and durability, it provides smooth and reliable power for any off-road condition.
Durable Steel Gears for Long-Lasting Performance
Equipped with high-strength steel gears, the drivetrain is built to handle high torque and demanding driving conditions. It provides enhanced durability, reduced wear, and reliable power transmission even during aggressive driving.
Center Differential for Superior Stability
Unlike standard RC trucks, the center differential allows the front and rear wheels to rotate at different speeds. This results in better traction, improved control, and a more stable driving experience—especially during high-speed turns.
Built-in Gyro for Stable & Easy Control
The integrated gyro stabilization system helps keep the truck steady at high speeds. It automatically corrects direction, making it easier to control and reducing the chance of losing control—perfect for beginners.
✅ With Gyro
❌ Without Gyro
The quick-release upper deck design allows fast access to internal components without complicated disassembly. It makes maintenance, repairs, and upgrades easier and more efficient, so you can spend more time driving and less time fixing.
The front and rear differential covers feature a quick-release design, allowing fast access without complex disassembly. Easily inspect, maintain, or service the differentials in minutes.
This RC truck features an adjustable battery compartment (115 × 38 × 25 mm), providing compatibility with various battery sizes for improved flexibility and usability.
The front mudguards are made from durable TPU material and securely mounted with screws for a stable fit. Their flexible design helps deflect dirt, debris, and small stones, protecting key front components during high-speed off-road driving.
The rear mudguards feature a flexible TPU construction with secure screw mounting, providing reliable protection against dirt and debris. They help keep the drivetrain cleaner and improve durability during rough terrain driving.
This RC truck features a quick-release PC body shell with front and rear clips, allowing fast removal without tools for improved convenience and usability.
The Hall sensor transmitter provides contactless operation for ultra-smooth control and precise centering. It eliminates drift and delivers a more accurate and responsive driving experience.
The transmitter supports a removable AA battery tray or a 2S LiPo battery (up to 65 × 35 × 15 mm), allowing you to choose the most convenient power option.
3-Speed Switch for Adjustable Control
Easily switch between low, medium, and high speed modes to match your skill level. Perfect for beginners learning control and experienced drivers seeking full performance.
Light Control & Easy Pairing Button
Easily switch lighting modes and pair the transmitter with a dedicated button. Enjoy quick setup and customizable lighting for a more immersive driving experience.
Precise Throttle & Brake Control
The responsive throttle and brake controls provide smooth acceleration and precise stopping power, giving you better control in every driving situation.
Steering Trim Adjustment Knob
Easily fine-tune the steering center position to keep your truck driving straight. The trim adjustment knob allows precise correction for better control and accuracy.
Steering Dual Rate Adjustment Knob
Adjust the steering sensitivity to control how much the wheels turn. It helps improve stability at high speeds and allows more precise handling.
Adjustable Gyro Sensitivity Knob
Fine-tune the gyro sensitivity to match your driving style and terrain. Easily adjust stability for better control at both low and high speeds.
Simple Steering Direction Correction
Quickly adjust the steering direction to match your controls, making it easier for beginners to get started.
Seamless Forward & Reverse Control
Easily switch driving direction for smoother maneuvering, helping you navigate tight spaces and tricky situations with ease.
Ergonomic Steering Wheel for Precise Control
The responsive steering wheel provides smooth and accurate control, allowing you to navigate turns with precision and confidence.
01
Realistic Window Mesh Detail
The side window mesh adds a realistic off-road racing look, enhancing the scale appearance and overall design of the truck.
01
Realistic Window Mesh Detail
The side window mesh adds a realistic off-road racing look, enhancing the scale appearance and overall design of the truck.
02
Integrated Full-Length Roll Cage
The built-in full-length roll cage enhances structural strength and helps protect the body during impacts. It also adds a realistic off-road racing look to the truck.
02
Integrated Full-Length Roll Cage
The built-in full-length roll cage enhances structural strength and helps protect the body during impacts. It also adds a realistic off-road racing look to the truck.
03
Highly Detailed Interior with Driver Figure
Designed with a highly detailed cockpit and driver figure, the truck delivers an authentic racing look that closely resembles real short course vehicles.
03
Highly Detailed Interior with Driver Figure
Designed with a highly detailed cockpit and driver figure, the truck delivers an authentic racing look that closely resembles real short course vehicles.
Technical specifications
Vehicle SPECS
Vehicle Name：
SIERRA PRO
Vehicle Model ：
UD1203PRO
Vehicle Scale：
1/12
Vehicle Type：
Short-Course Truck
Vehicle Suspension:
Independent Suspension
Vehicle Size:
L375×W198×H139mm
Vehicle Front wheel track:
165mm
Vehicle Rear wheel track:
165mm
Vehicle Wheelbase:
228mm
Vehicle Ground clearance:
about 30mm
Vehicle Power type:
Electric
Vehicle Speed:
50-80km/h
Vehicle Transmission mode:
Spindle transmission
Vehicle Differential:
Metal Differential
Vehicle Drive system:
4 wheel drive
Vehicle Drive type:
Adjustable
Vehicle Tire diameter:
ø73.3×30.5mm
Vehicle Wheel adapters:
11.97mm, metal
Vehicle Body:
PC
Vehicle Battery compartment capacity:
L115×W38×H25mm
Vehicle Main spur gear:
1m, 10T
Vehicle Bevel gear:
0.8m
Vehicle Servo:
3-line, 17g copper gear digital servo
Vehicle Car lights:
Included
MOTOR SPECS
Motor Model:
BL2845-47
Motor Type:
Brushless motor
Motor Weight:
About 128g
Motor Size：
2845-4700KV
Motor Rated voltage：
7.4-11.1V DC
Motor Output shaft：
ø3.175mm
Motor Connector Type：
3.5mm banana head
Motor Limit：
2-3S LiPo
ESC SPECS
ESC Model：
ESC60
ESC RF Standard:
2.4GHz
ESC Input Power:
2-3S
ESC Rated current:
60A
Power Connector:
XT60
Transmitter
Transmitter Model：
UA42-E01
Transmitter Control Type：
Proportional
Transmitter Frequency Band：
2.4GHz
Transmitter Control Distance：
About 100m
Transmitter Channels：
4
Transmitter Iput Power Method 1：
1.5V AA Battery x 4pcs
Transmitter Iput Power Method 2：
7.4V Battery with connector type XH2.54-3P
Receiver
Receiver Model：
SR6
Receiver RF Standard：
2.4GHz
Receiver Input Voltage：
3.6-12V DC
Receiver Size：
32×15×20mm
Customers praised this 1/12 scale trophy truck for exceptional performance and durability. "Small package huge performance" with brushless motor, center differential, and gyroscope for control. Reviewers noted it "drives like a bigger truck" and is "tough as nails." One customer mentioned remote control issues with loose steering wheel and limited travel.
- Successfully delivers scale realism and robust, high-speed performance at a competitive price point.
- I've never pushed a car so hard and had it come out unscathed.
- It drives and handles like a bigger RC car.
Scale (positive)Control (positive)Truck (positive)Gyroscope (positive)Price (positive)
M
Vehicle + 1x 3S LiPo Battery
Absolutely amazing rc car i most say its udirc best on the market I love it fast shipping and delivery 😍
C
Vehicle + 1x 3S LiPo Battery
Absolutely a beast of a trophy truck!!! It’s so much fun right out of the box and very durable. The UDIRC team really nailed this one. All the power you could need and looks amazing.
L
This is a great rc the center diff which is rare in a smaller size vehicle makes all the difference in performance. Small package huge performance you have a brushless motor paired to a strong esc with overall a nicely built durable rc and really cool lighting system as well I really enjoy this rc a lot.
T
Vehicle Only – No Battery
https://youtu.be/ICdezuuaGQA?is=3fFDxwXuTi6ItivF
P
Vehicle Only – No Battery
Handy size, small enough but drives like a bigger truck, very fast, very durable! Check out the full review here: https://youtu.be/8fZ1Nfsvwao
U
Vehicle Only – No Battery
i have been nothing but bash and blast with this truck and has been fantastic. I did break a front lower control arm today and thanks a MILLION for providing replacements arms. that was an absolute lifesaver.
D
Every day when I get home, my buddy and I immediately grab this little truck.
We've got three 3s-2200 mAh batteries, and we absolutely tear this thing up across all sorts of terrain. We jump it high, low, and far, constantly smashing into stuff. He loves trying to catch it, and when he does, he grabs it with his teeth and flips it all over the place. This thing is seriously durable. I used to have the 1610S Pro, which was awesome too, until I got the 1203 Pro, and we did the exact same stuff with that one!
I had some trouble getting my programming card to work, so I reached out to customer support. They got back to me super fast, communicated really well, and totally stood by their product. I was blown away by that. You can have the best product ever, but if the customer support isn't there to back it up, it's useless to me.
I'm especially impressed with the gyroscope; it lets us pull off quick moves without losing control. I thought we might have issues with the fans or steering, but they're both working perfectly even after a ton of use. I'm pretty new to the RC hobby, and in the short time I've been into it, I feel like when you spend hundreds of dollars on something, it should just work right, and you shouldn't have to upgrade or buy new parts so quickly. I've had great luck with these UDI RC rigs and I'll keep supporting them and buying their stuff.
M
Vehicle Only – No Battery
Okay, guys, I have a YouTube channel. And I run lots of different RC cars and for a smaller short course truck. This is, by far the best one. I've run. Great performance very durable. It feels like a high-end RC car, it drives and handles like a bigger RC car. This is my honest opinion.
I highly recommend it 100%
P
Undoubtedly, one of the best (if not the best) under 1/10 scale SCT on the market today. Looks awesome, performance is great, and it's tough as nails. I've never pushed a car so hard and had it come out unscathed.
https://youtu.be/lV6wdnPAZH0
R
Vehicle + 1x 3S LiPo Battery
Never received it, but the company did make good for it. They are a great company to do business with.
F
Vehicle + 1x 3S LiPo Battery
Udirc kept telling me to leave a review, so here it is. I haven't run the car yet as it's been too hot. I have done a bench test to make sure it functions. I had a small issue with the remote not turning on but it resolved itself a few days later. What I can say is customer service was very quick to respond. Final thoughts can't truly give a rating so take this review with a grain of salt.
G
Vehicle + 1x 3S LiPo Battery
The UDIRC UD1203PRO punches well above its weight class. It successfully delivers the scale realism and robust, high-speed performance of a premium trophy truck at a highly competitive price point. For enthusiasts looking for a highly durable, 3S-ready small-scale basher, this truck is an absolute home run.
M
Vehicle Only – No Battery
the best small scale sc on the market ! price/performance/durability and with the lowest spare part price I LOOOVE IT !!
A
Vehicle Only – No Battery
Great fun for a little SCT… fast and great looking
D
Vehicle + 1x 3S LiPo Battery
The UDIRC UD1203 Pro is a phenomenal little truck! Love the Scale size, handling and looks of this super nice vehicle.
A
The truck is really great and of excellent quality. Unfortunately, the remote control is absolute rubbish. The steering wheel is too loose and has too little travel. I hope UDIRC will release a different remote control for this truck.
B
Absolutely love this truck! So fast out of the box and I might be the most durable RC!
A
Fast, durable and well rounded control ! 👍🏼
UDIRC absolutely knocked it out of the park with this 1/12 short course truck! If you’re a fan of the ARRMA Mojave Grom but wanted something in a bigger size, here it is! This truck is extremely powerful, but the center differential and gyro really help with power delivery and control. The suspension is dialed for short course truck like performance. It’s also super tough, and they even include spare control arms, although I haven’t broken one yet.
J
We're recording content for this truck as im typing this. I'm impressed by it, and would like to see UDIRC continue in this direction. One change I'd make would be softer brakes, otherwise fantastic truck!
B
When can I get spare parts if I break something or something wears out
If you need spare parts due to breakage or normal wear, please contact us with the part details. For orders placed on our official website or Amazon, spare parts are typically delivered within 7–15 business days, depending on your location and the distance from our warehouse.