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LEGO®42099Powered UPPowered UP

4X4 X-treme Off-Roader

Average rating4.1out of 5 stars

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Price$249.99

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Hi-tech motorized model

Cool 4x4 Off-Roader, powered by an advanced smart hub with 3 motors and operated via the intuitive LEGO® TECHNIC™ CONTROL+ app.

Super-cool design and performance

Drive in all directions, traverse obstacles and get real-time feedback, such as speed and tilt—all via a smart device.
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LEGO® Technic™ 4x4 X-treme Off-Roader

Awesome design

Rugged truck with huge wheels and chunky tires.

An educational play experience

LEGO® builders learn advanced elements of engineering.

Tough suspension

Rugged high-rise independent suspension for rough terrain.

Challenges and achievements

Complete fun challenges to win reward badges.

Super-precise control

Operated via the free LEGO® TECHNIC™ CONTROL+ app.

Multifunction control

Perform amazing maneuvers with a touch of a fingertip.

A highly rewarding building experience

LEGO® builders are introduced to advanced elements of engineering as they construct this super-realistic LEGO Technic™ model.

Are you ready to take your LEGO® play experience to another level? The LEGO Technic™ 4x4 X-treme Off-Roader is powered by an advanced Smart Hub with 3 motors and controlled via the intuitive LEGO TECHNIC CONTROL+ app. The sophisticated app technology enables super-precise movement and functionality, while delivering endless authentic digital play combinations with authentic sound effects. Users can choose from different control screens to drive forward, reverse, steer, accelerate, brake and traverse obstacles. You can also get real-time feedback, such as a speed and tilt log or test out your skills in the app’s challenges and achievement section. This sturdy 4x4 app-controlled truck comes with high-rise independent suspension, large wheels with chunky tires and a fresh color scheme with intricate sticker detailing. Its complex gear mechanisms and technologies introduce LEGO builders to advanced elements of engineering, while improving reaction times, cognitive thinking and creative problem-solving skills.

  • This cool toy truck model is controlled via the LEGO® TECHNIC™ CONTROL+ app and powered by an advanced Smart Hub with 2 XL motors and 1 L motor for a more immersive play experience, authentic movements and hours of fun.
  • The app-controlled LEGO® 4x4 X-treme Off-Roader is operated via a smart device with 3 alternative screens. Go to LEGO.com/devicecheck for a list of compatible smart devices.
  • Multi-function control: Drive forward, reverse, steer, accelerate, brake, traverse obstacles, play sound effects and get real-time feedback, such as a speed and tilt log.
  • One-touch control: Drag a direction on the screen and see the 4x4 carry out the maneuver.
  • Challenges & achievements: Complete challenges to unlock achievement badges.
  • Sturdy app-controlled LEGO® truck with high-rise independent suspension, large wheels and chunky tires.
  • Smart Hub features Bluetooth Low Energy (BLE) connectivity, activation button, 6 axis sensor (3 gyro and 3 accelerometer sensors) and 4 connectivity ports.
  • Download the LEGO® TECHNIC™ CONTROL+ app from the App Store or Google Play. Ask your parents’ permission before going online.
  • This remote-controlled truck requires batteries (not included). Please refer to the product packaging for type and quantity.
  • This buildable LEGO® Technic™ model introduces LEGO builders to advanced elements of engineering, while improving reaction times, cognitive thinking and creative problem-solving skills.
  • Not compatible with LEGO® Power Functions systems.
  • 4x4 X-treme Off-Roader measures over 7” (19cm) high, 12” (33cm) long and 8” (22cm) wide.
Building Instructions
4X4 X-treme Off-Roader
  • Free standard 3 to 5 business day shipping on all merchandise orders over $35!
  • Express shipping available at checkout.
  • Custom parts orders are sent separately from merchandise and take additional time to process and deliver.
  • Unopened merchandise may be returned for a full refund within 90 days of receipt of your order.
Some exclusions apply. Visit our Deliveries and Returns page for more information.
Overall RatingAverage rating4.1out of 5 stars
(51 Reviews)
76% would recommend this product.

Rating

Overall Experience

Play ExperienceAverage rating3.9out of 5 stars
Level of DifficultyAverage rating3.2out of 5 stars
Value for MoneyAverage rating3.8out of 5 stars
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Reviews

  • October 4th, 2020
    Average rating1out of 5 stars
    set just became a 'brick'
    | 35-44
    Set just became a stationary 'brick' after recent application update, moreover the new cable <> Hub connection layout from the app doesn't match the real - life connector colors Dear LEGO, please let the IT team play the product before they do some changes in related apps.(photos included) I've tried multiple port connection combinations, still the control app gives one error message.
    Lego

    Response from LEGO SHOP

    October 6, 2020
    Natasha, LEGO® Customer Service
    Oh no, sorry to see this happening to you! Please try deleting the app from your device and re-installing. If that doesn't help, get in touch with our experts at LEGO.build/Service-BV.
    Play ExperienceAverage rating1out of 5 stars
    Value for MoneyAverage rating1out of 5 stars
    Was this helpful?
    154X4 X-treme Off-Roader
  • March 16th, 2021
    Average rating5out of 5 stars
    A 4 star model with a 5 star option!
    | 45-54
    I would recommend this to a friend!
    Purchased for: Self
    As built, this is a challenging model with incredible structural strength. As built this is a 4x4 truck that can handle minor off-roading. As built, this is a fun truck! We had wet snow falling the day after I built it and I took it outside. In 1/4" (7mm) or less of heavy wet snow the truck did fine, but once you got in to deeper snow it would stall once the snow built up under the differential. Not very impressive. This is why this is a 4 star model. How to get to 5 star? Below are three changes you need to make, extremely easy if you built it this way outright, if you need to modify it look up on YouTube the 5-minute fix for the 42099 model. This little set of changes does two things, it cuts the speed in half, but it allows you to run in 1.5" (38mm) heavy wet snow and keep going. I drove around for over 20 minutes until I finally pushed my luck and high-centered. 5 Star truck! You just need to do the following three things! Halve you speed, double your power. Thanks to Youtuber: RacingBrick Step 78 - use the tan gear from step 82 not the black one Step 82 - use the black gear from step 78 not the tan one you already used Step 159- left side of the picture, there is a black and tan gear, carefully swap them. Have Fun! Remember, LEGO allows you to explore! Never forget that!
    Play ExperienceAverage rating5out of 5 stars
    Level of DifficultyAverage rating5out of 5 stars
    Value for MoneyAverage rating5out of 5 stars
    Build Time: 3 hrs
    Building Experience: Expert LEGO builder
    Was this helpful?
    554X4 X-treme Off-Roader
  • December 25th, 2020
    Average rating5out of 5 stars
    incredible
    I would recommend this to a friend!
    Hi, I'm Juan and I'm from Chile. This Christmas I asked for the 4x4 x-treme and I loved it. I have never built sets with such complex systems before. the app is really good and the car is very flexible. I have several legos but this one has been the most challenging and entertaining.
    Level of DifficultyAverage rating4out of 5 stars
    Value for MoneyAverage rating4out of 5 stars
    Build Time: 5 hrs
    Was this helpful?
    554X4 X-treme Off-Roader
  • January 15th, 2020
    Average rating5out of 5 stars
    Such an amazing Build and Toy
    I would recommend this to a friend!
    I got this for my 2 kids, 9 yr old and 4 yr old. My son really just loves to look at cars and trucks so this was a no brainer. My daughter is super into legos and we started to work on this together. My son had fun putting on the sticker decals. Unfortunately, I had to finish the job but it was super fun for the kid in me too. I do think the recommended age is accurate as an older kid would probably want to spend more time with building it. But, being able to then use the app and control and drive it around made it so much fun. The motors are actually strong enough to go over small things which makes this "off road" toy actually work. The app was super easy to use even for my 4 year old, so he still gets to play with it. YAY! I immediately started looking for the other builds in this product line. This is a great toy!
    Lego

    Response from LEGO SHOP

    January 16, 2020
    Samuel, LEGO Customer Service
    Your young superfan will quickly become a superman on wheels with this X-treme Off-Roader. ;) It's heartwarming to hear about your experience and seeing how it brought up the kid in you too. LEGO® Technic™ may be a bit advanced for your young fans, so it's truly awesome to hear you found a way to make it work. :D
    Play ExperienceAverage rating4out of 5 stars
    Level of DifficultyAverage rating5out of 5 stars
    Value for MoneyAverage rating5out of 5 stars
    Was this helpful?
    554X4 X-treme Off-Roader
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