Super cool
Amazing activity for childrenMy son is 8 and with a little help he is still able to get this done
Retailer prices for 42099 are sorted by the latest lowest price.
Retailer pricesPrice history 42099
We check Dutch retailers every day. This graph shows the full daily-low price series we have for this set.
Daily lowest price tracked across 8 Dutch retailers. The dotted line marks LEGO's recommended retail price.
Source: daily measurement at 8 Dutch retailers, 14 Dec 2025 – 31 May 2026. RRP via LEGO.com.
| Date | Price | Retailer | Stock |
|---|---|---|---|
| €368,25 | Kitstore | In stock | |
| €319,95 | SpeelGoedNL | In stock | |
| €399,95 | Special Bricks | In stock | |
| €368,25 | Kitstore | In stock | |
| €319,99 | Steentjesplein | In stock | |
| €319,95 | SpeelGoedNL | In stock | |
| €399,95 | Special Bricks | In stock | |
| €340,95 | Kitstore | In stock | |
| €319,95 | SpeelGoedNL | In stock | |
| €399,95 | Special Bricks | In stock | |
| €341,03 | Kitstore | In stock | |
| €319,99 | Steentjesplein | In stock |
Calibrated forecast based on historical pricing, seasonal patterns and retailer behavior. Tuned conservatively: rather cautious than optimistic.
Stronger signal than most sets in this theme. Waiting is a reasonable strategy.
How LEGO 42099 compares to RRP and history.
For LEGO 4X4 X-treme Off-Roader (42099), we track 4 retailers in the Netherlands, with 4 currently in stock. The current lowest price is €319,95. Use price history and stock data to judge whether this is a good time to buy.
Are you ready to take your LEGO® play experience to the next level? The LEGO Technic™ 4x4 X-treme Off-Roader is powered by a sophisticated Smart Hub with 3 motors and controlled via the intuitive LEGO TECHNIC CONTROL+ app. The advanced app technology enables super-precise movement and functionality, while delivering endless authentic digital play combinations with realistic 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.
All about this set
Background, build experience, collector context, and buying notes in one story.
For LEGO 4X4 X-treme Off-Roader (42099), we track 4 retailers in the Netherlands, with 4 currently in stock. The current lowest price is €319,95. Use price history and stock data to judge whether this is a good time to buy.
Are you ready to take your LEGO® play experience to the next level? The LEGO Technic™ 4x4 X-treme Off-Roader is powered by a sophisticated Smart Hub with 3 motors and controlled via the intuitive LEGO TECHNIC CONTROL+ app. The advanced app technology enables super-precise movement and functionality, while delivering endless authentic digital play combinations with realistic 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.
The current lowest price is €319,95 across 4 tracked retailers.
Instructions & specifications
Dimensions, pieces, build steps, and the official PDF building instruction.
Parts inventory
Known set data around pieces and build context.
Technic Pins
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots
Part ID 6558 · Blue
Qty 76
Technic Axle Pin with Friction Ridges Lengthwise
Part ID 43093 · Blue
Qty 54
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]
Part ID 32054 · Black
Qty 40
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle
Part ID 11214 · Red
Qty 30
Technic Pin 1/2
Part ID 4274 · Blue
Qty 18
Technic Pin with Friction Ridges Lengthwise and Towball
Part ID 6628 · Red
Qty 10
Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle
Part ID 18651 · Black
Qty 6
Technic Pin Long without Friction Ridges
Part ID 32556 · Tan
Qty 6
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]
Part ID 32054 · Orange
Qty 3
Technic Axle Towball
Part ID 2736 · Light Bluish Gray
Qty 2
Technic Pin with Friction Ridges Lengthwise and Center Slots
Part ID 2780 · Black
Qty 1
Technic Pin 3/4
Part ID 32002 · Tan
Qty 1
Technic Axles
Technic Axle 2 Notched
Part ID 32062 · Red
Qty 29
Technic Axle 3
Part ID 4519 · Light Bluish Gray
Qty 23
Technic Axle 4
Part ID 3705 · Black
Qty 10
Technic Axle 3 with Stop
Part ID 24316 · Reddish Brown
Qty 8
Technic Axle 4 with Stop
Part ID 87083 · Dark Bluish Gray
Qty 7
Technic Axle 10
Part ID 3737 · Black
Qty 6
Technic Axle 5
Part ID 32073 · Yellow
Qty 5
Technic Axle 4 with Centre Stop
Part ID 99008 · Tan
Qty 5
Technic Axle 6
Part ID 3706 · Black
Qty 2
Technic Axle 12
Part ID 3708 · Red
Qty 1
Technic Axle 10
Part ID 3737 · Red
Qty 1
Technic Axle 7
Part ID 44294 · Light Bluish Gray
Qty 1
Technic Axle 5.5 with Stop [Rounded Short End]
Part ID 59426 · Dark Bluish Gray
Qty 1
Technic Connectors
Technic Axle and Pin Connector Perpendicular
Part ID 6536 · Black
Qty 26
Technic Axle and Pin Connector Angled #1
Part ID 32013 · Black
Qty 14
Technic Axle and Pin Connector Perpendicular Triple
Part ID 63869 · Black
Qty 13
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes
Part ID 42003 · Black
Qty 10
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes]
Part ID 87082 · Light Bluish Gray
Qty 6
Technic Axle and Pin Connector Angled #2 - 180°
Part ID 32034 · Black
Qty 5
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole
Part ID 32184 · Light Bluish Gray
Qty 5
Technic Pin Connector Hub Perpendicular 3L with 4 Pins
Part ID 48989 · Light Bluish Gray
Qty 5
Technic Axle and Pin Connector Toggle Joint Smooth
Part ID 32126 · Black
Qty 4
Technic Axle and Pin Connector Angled #4 - 135°
Part ID 32192 · Black
Qty 4
Technic Axle and Pin Connector Perpendicular Double
Part ID 32291 · Black
Qty 4
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes
Part ID 42003 · Red
Qty 4
Technic Pin Connector Hub with 1 Axle
Part ID 22961 · Red
Qty 2
Technic Axle and Pin Connector Angled #6 - 90°
Part ID 32014 · Black
Qty 2
Technic Axle and Pin Connector Angled #5 - 112.5°
Part ID 32015 · Light Bluish Gray
Qty 2
Technic Axle and Pin Connector Angled #2 - 180°
Part ID 32034 · Light Bluish Gray
Qty 2
Technic Axle Connector with Axle Hole
Part ID 32039 · Yellow
Qty 2
Technic Pin Connector Round [Slotted]
Part ID 62462 · Light Bluish Gray
Qty 2
Technic Axle and Pin Connector Perpendicular Triple
Part ID 63869 · Light Bluish Gray
Qty 2
Technic Pin Connector Round 1L [Beam]
Part ID 18654 · Black
Qty 1
Technic Pin Connector Round 1L [Beam]
Part ID 18654 · White
Qty 1
Technic Driving Ring Connector
Part ID 18948 · White
Qty 1
Technic Pin Connector Hub with 1 Axle
Part ID 22961 · Light Bluish Gray
Qty 1
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole
Part ID 32184 · Yellow
Qty 1
Technic Axle Connector Smooth [with x Hole + Orientation]
Part ID 59443 · Orange
Qty 1
Technic Beams
Technic Beam 2 x 4 L-Shape Thick
Part ID 32140 · Black
Qty 21
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole
Part ID 60483 · Orange
Qty 14
Technic Beam 1 x 5 Thick
Part ID 32316 · Dark Bluish Gray
Qty 12
Technic Beam 1 x 3 Thin
Part ID 6632 · Dark Bluish Gray
Qty 12
Technic Beam 3 x 5 L-Shape Thick
Part ID 32526 · Dark Bluish Gray
Qty 11
Technic Beam 1 x 11 Thick
Part ID 32525 · Black
Qty 9
Technic Beam 1 x 15 Thick
Part ID 32278 · Black
Qty 8
Technic Beam 1 x 7 Thick
Part ID 32524 · Light Bluish Gray
Qty 7
Technic Beam 3 x 3 T-Shape Thick
Part ID 60484 · Light Bluish Gray
Qty 7
Technic Beam 1 x 5 Thin with Axle Holes on Ends
Part ID 11478 · Black
Qty 6
Technic Beam 1 x 2 Thin
Part ID 41677 · Red
Qty 6
Technic Beam 1 x 9 Bent (6 - 4) Thick
Part ID 6629 · Black
Qty 6
Technic Connector Beam 3 x 3
Part ID 39793 · Black
Qty 5
Technic Beam 1 x 11.5 Double Bent Thick
Part ID 32009 · Black
Qty 4
Technic Beam 1 x 3 Thick
Part ID 32523 · Lime
Qty 4
Technic Beam 1 x 3 Thick
Part ID 32523 · Bright Light Orange
Qty 4
Technic Beam 1 x 9 Thick
Part ID 40490 · Dark Bluish Gray
Qty 4
Technic Beam 1 x 2 Thin
Part ID 41677 · Black
Qty 4
Technic Beam 1 x 13 Thick
Part ID 41239 · Dark Bluish Gray
Qty 3
Technic Beam 1 x 11.5 Double Bent Thick
Part ID 32009 · Bright Light Orange
Qty 2
Technic Beam 1 x 15 Thick
Part ID 32278 · Bright Light Orange
Qty 2
Technic Beam Triangle Thin [Type II]
Part ID 99773 · Yellow
Qty 2
Technic Beam 2 x 4 L-Shape Thick
Part ID 32140 · Dark Azure
Qty 1
Technic Beam 1 x 5 Thick
Part ID 32316 · White
Qty 1
Technic Beam 1 x 5 Thick
Part ID 32316 · Bright Light Orange
Qty 1
Technic Beam 1 x 2 Thick
Part ID 43857 · Blue
Qty 1
Bricks Round and Cones
Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end
Part ID 25214 · Black
Qty 12
Technic Steering, Suspension and Engine
Technic Link 1 x 6 without Stoppers
Part ID 32005a · Black
Qty 8
Technic Steering / CV Ball Joint Male 3L
Part ID 52731 · Light Bluish Gray
Qty 8
Technic Steering Wheel Hub with Planetary Gear Reduction
Part ID 46490 · Light Bluish Gray
Qty 4
Technic Steering / CV Ball Joint Female 4L
Part ID 52730 · Dark Bluish Gray
Qty 4
Technic Steering Arm 5.5 x 2 with Towball Socket Rounded, Chamfered
Part ID 57515 · Dark Bluish Gray
Qty 4
Technic Shock Absorber 6.5L with Hard Spring, Tight Coil in Middle [Complete Assembly]
Part ID 76537 · Red
Qty 4
Technic Steering Wheel Small (3 Studs Diameter)
Part ID 2819 · Light Bluish Gray
Qty 1
Technic Gears
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening]
Part ID 18575 · Tan
Qty 6
Technic Gear 12 Tooth Bevel
Part ID 6589 · Tan
Qty 6
Technic Gear 12 Tooth Double Bevel
Part ID 32270 · Black
Qty 5
Technic Turntable Large Type 3 Top, 60 Tooth
Part ID 18938 · Black
Qty 2
Technic Turntable Large Type 3 Base
Part ID 18939 · Light Bluish Gray
Qty 2
Technic Gear Differential with Inner Tabs and Closed Center, 28 Bevel Teeth [Beveled Edge]
Part ID 62821b · Dark Bluish Gray
Qty 2
Technic Gear Rack 1 x 7 with Axle and Pin Holes
Part ID 87761 · Black
Qty 1
Plates
Plate 1 x 2
Part ID 3023 · Trans-Clear
Qty 6
Plate 1 x 2
Part ID 3023 · Trans-Red
Qty 2
Plate 1 x 2
Part ID 3023 · Light Bluish Gray
Qty 2
Plate 1 x 4
Part ID 3710 · Black
Qty 2
Plate 1 x 1
Part ID 3024 · Trans-Red
Qty 1
Technic Bushes
Technic Bush
Part ID 3713 · Light Bluish Gray
Qty 6
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced
Part ID 32123b · Light Bluish Gray
Qty 1
Wheels and Tyres
Wheel 56 x 34 Technic Racing Medium with 6 Pin Holes
Part ID 15038 · Black
Qty 4
Technic Panels
Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface
Part ID 11954 · Black
Qty 3
Technic Panel Curved and Bent 6 x 3
Part ID 24116 · Light Bluish Gray
Qty 2
Technic Panel Fairing #21 5L Small Smooth, Side B
Part ID 11946 · Black
Qty 1
Technic Panel Fairing #22 5L Small Smooth, Side A
Part ID 11947 · Black
Qty 1
Technic Panel 3 x 11 x 1
Part ID 15458 · Black
Qty 1
Technic Beams Special
Technic Beam 5 x 11 with 3 x 5 Opening Frame Thick
Part ID 64178 · Light Bluish Gray
Qty 3
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes]
Part ID 14720 · Light Bluish Gray
Qty 2
Technic Beam 3 x 0.5 Liftarm with Boss and Pin Semi-Reduced
Part ID 33299b · Black
Qty 2
Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick
Part ID 64179 · Black
Qty 2
Electronics
Motor, XL, Powered Up
Part ID 22172 · Dark Bluish Gray
Qty 2
Hub, Powered Up 4-Port (Technic Control+) - Clip Opening
Part ID 22127 · Light Bluish Gray
Qty 1
Motor, Large, Powered Up
Part ID 22169 · Dark Bluish Gray
Qty 1
Wire Clip with Axle Hole
Part ID 49283 · White
Qty 1
Wire Clip with Axle Hole
Part ID 49283 · Red
Qty 1
Wire Clip with Axle Hole
Part ID 49283 · Blue
Qty 1
Plates Round Curved and Dishes
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]
Part ID 2654 · Trans-Clear
Qty 2
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Part ID 4032a · Black
Qty 2
Tiles
Tile 1 x 2 with Groove
Part ID 3069b · Trans-Clear
Qty 2
Tile 1 x 1 with Groove
Part ID 3070b · Trans-Orange
Qty 1
Tile 1 x 1 with Groove
Part ID 3070b · Trans-Clear
Qty 1
Bars, Ladders and Fences
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip]
Part ID 48729b · Black
Qty 2
Stickers
Tubes and Hoses
Hose Rigid 3mm D. 14L / 11.2cm
Part ID 75c14 · Black
Qty 1
Retailer reviews
Summarized retailer review data when available.
Amazing activity for childrenMy son is 8 and with a little help he is still able to get this done
Excellent
Great product, as usual with LEGO. When considering it as a gift, keep in mind that it requires a lot of skill to build.
It's my first LEGO Technic set, so its construction took longer than I expected based on some reviews. I bought it on sale at a very good price, considering the Control+ features it has, which include 3 motors and the latest generation Hub. The app for controlling it is very easy to use and intuitive, and it also has a guided mode for completing challenges and learning how to use it. It also displays the tilt angle on both axes, and if it's tilted too much or lacks power, it won't move forward and a warning message appears on the screen. Overall, I think it's a very good set for use or collection.
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!
Fun to build. On the app, to me, the controls are reversed. Steering on left gas on right. Takes a bit to get use to. Fun to build. Not repetitive at all. I like displaying more than playing with it. Mine seems to pull to one side when driving.
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.
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.
Top quality as expected from Lego. However there are a few issues. 1. The instructions could be a bit more easy to read at some stages. However if this not your first Lego it should not be a problem. 2. At this price it should have at least a model B or even C. 3. The original built has 2 issues. Not enough torque to climb much and low clearance at the front axle. However there are several alternative build you could try on your own or search online for alternative building instructions. You can build a quiet capable crawler with few modifications using only the included pieces. I wanted to give a 4 star for the lack of official more capable B model but for the quality of the bricks you get it wouldn't be fair. If you are experienced builder you will have lots of fun with alternative builds.
Built this with my daughter who Is showing a intrest in lego that I’ve built so thought ok get this one and the rally car . The build was ok and no real problems. Only down thing which I found and so did my daughter with both models they just don’t go fast enough for kids .. my daughter loved the app control using the touch screen control . But today’s kids want speed ? So please lego change the gearing so future models go quicker, as my daughter who’s 9 get fed up with it going so slow .. I will look and see if can change the gearing myself for her but most wont and just give up on it..
My wife bought me this for my birthday knowing how much I love legos. This was my first Technic set so was kind of challenging. Took me 6 hours but worth it. Final product was amazing. Played it for two days.
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!
It was nicely stacked and packed for building it from scratch, what an engineering marvel to build this truck. It took me 4 days of continuous effort to enjoy me building this monster truck. In my true opinion I enjoyed more building (assembling) Legos piece by piece. it refreshed my mechanical memories. I absolutely enjoyed 4 days of building effort and playing after it was fully assembled. It was like watching a baby growing up.
Super cool car to build and play with, control from your smartphone. On YouTube, you can find videos showing how to upgrade this car, allowing it to handle even larger obstacles, simply by moving some gears.
Fun build. Everything is clear, and there are also several MOCs available to make it even more powerful, which are very easy to assemble, within 5 minutes. A real 4x4! Make sure your phone can handle the app though :) In my case, it worked, and I'm already having a great time!
It's fun to build and fun to drive if you enjoy remote-controlled cars.
Lego is lego
This is the first version of LEGO Technics that you can control with your phone, which provides much more fun and I am very satisfied with the possibilities.
Positive aspects of this product are: good quality and durability.
I was really motivated from that tower challenge video, that I went out and got this kit, as well as a FPV camera, and Receiver Monitor. I struggled mostly with trying to manage the cables in segment TWO taking almost FIFTEEN minutes to route them without them popping out, and wanted to give them enough slack as well (bit of a perfectionist trying to get it to look like how it was in the book). I was surprised this kit didn't offer a Model B variant chassis to build with other parts, though not really disappointed since this one turned out great without any of the stickers. Overall it was a great experience building it, and am having a ton of fun with my FPV RC Truck!
All retailer prices
Current prices, stock and discounts per retailer.
Price context
Lowest, highest and average price for this set.
This context is based on 343 price points across 4 retailers. The chart on the page remains the full interactive source.
Price forecast
Conservative baseline for the next period.
Waiting is a reasonable strategy: the signal is stronger than many comparable sets.
FAQ & set details
Pieces, year, RRP and retailer coverage.
Quick answers about price, stock and set data.