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LEGO

LEGO Technic McLaren Senna GTR 42123 Racing Sports Collectable Model Car Building Kit, Car Construction Toy, Gift Idea for Kids, Boys and Girls

  • Based on 9,272 reviews
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Availability: Only 5 left in stock, order soon!
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Arrives Sunday, Aug 2
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Features

  • Features McLaren Senna toy racing car, a true racetrack icon's authentic replica and LEGO Technic version of McLarens show-stopping supercar
  • Ultimate speed. Supreme power. Breathtaking good looks. This collectable McLaren toy car features eye-catching graphics, colors & details
  • Check out the detailed V8 engine with moving pistons and dihedral doors that open up and out' in the unmistakable style of the real McLaren
  • Build all the realistic features and beautiful design details, then display your car to attract admiring glances from everyone who passes
  • LEGO Technic model car building kits feature realistic movement and mechanisms that introduce young builders to the universe of engineering
  • This LEGO toy sports car building set is an impressive Christmas gift for 10 + years old or a racing cars lover of any age

Description

Looking for the ultimate gift for a child or teen who loves supercar toys? This LEGO Technic McLaren Senna GTR (42123) toy car building set is a great choice – this collectable model car kit is sure to set pulses racing, and adult McLaren fans will love it too! The LEGO sports car is packed with authentic features inspired by the original track-focused supercar icon. Realistic details and powerful functions make sure the McLaren Senna GTR is a car unlike any other, and this awesome LEGO Technic toy version is equally impressive. Check out the V8 engine with moving pistons, iconic dihedral doors that open, plus authentic graphics and colors, just like on the real car. Steer using the wheel, then put the model on display where it’s sure to draw many admiring glances. LEGO Technic model car building kits feature realistic movement and mechanisms that introduce LEGO builders to the universe of engineering in an approachable and realistic way. They make a fantastic birthday present or Christmas gift for 10 + years old fans of LEGO sports cars. Measures over 3 in. (9 cm) high, 12 in. (32 cm) long and 4 in. (12 cm) wide. Contains 830 pieces.

Brand Name: LEGO


Manufacturer Minimum Age (MONTHS): 120


Sub Brand: McLaren


Model Name: McLaren Senna GTR™ 42123


Model Number: 6332738


Age Range Description: Adult


Customer Package Type: FFP (Flat Free Package)


Manufacturer Maximum Age (MONTHS): 1200


Unit Count: 1 Count


UPC: 673419340069


Global Trade Identification Number: 69


Target Audience: CHARACTERFAMILY


Included Components: LEGO Building Elements


Item Type Name: Building Kit


Manufacturer: LEGO


Model Year: 2020


Manufacturer Part Number: 42123


Color: Multicolor


Theme: Vehicle


Number of Pieces: 830


Item Dimensions: 15.04 x 10.32 x 2.78 inches


Item Weight: 200 g


Size: One Size


Educational Objective: Creative Building


Additional Features: Collectible, Construction, Vehicles


Toy Building Block Type: Stacking Toy Building Block


Material Type: Plastic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • excelnte
excelente
Reviewed in the United States on June 12, 2026 by juan camilo hoyos franco
    • McLaren GTR is ⭐️⭐️⭐️⭐️⭐️
It looks very nice, clean and not too over complicated. I have dropped this thing a little bit too much as I have put it in on shelves but it has stayed intact. The best age to work with to make this is around 8 to 12 years old at minimum. This Lego McLaren GTR is something I don’t really play with because it seems to me I like to put them around on shelves. If you would like your kid to play with this McLaren, I would be mindful of how they use it, as it’s not the strongest thing in the world but it’s still pretty good. Playability is optional but not recommend. ... show more
Reviewed in the United States on April 18, 2026 by Doge (TJ)
    • An absolute deal for the piece count!
Review Image by Kyle Daniels
Review Image by Kyle Daniels
Review Image by Kyle Daniels
For the amount of pieces in this set this one is an absolute deal! It all went together well, instructions were easy to follow, and no missing pieces. Getting back into Legos now that my son is into them brings me back to when I was a young kid in the early 90s obsessed with these things. They really have come a long way and are a blast to build now as an adult! This kit took about 4 hours to complete and has moving engine pistone when you drive it which is just so cool to see! This kit is a must have for the price point and piece count for your collection. I attached a picture to show other vehicle in the current fleet for size comparison. Ranging from 100 pieces for the small blue car to over 1000 on the dark green one. So you can see if you are looking to know how big each of them are based on piece count and price. ... show more
Reviewed in the United States on March 15, 2023 by Kyle Daniels
    • Only $50 for 830 pieces?! Best bang for your buck Lego kit!
Review Image by Erik
Review Image by Erik
Review Image by Erik
I really don't leave reviews all that often, and I also don't really collect Technic sets! The Technic builds normally never look as nice as normal Lego kits, but at $50 for 830 pieces, photos looked decent and I had the cost covered with an Amazon gift card, so I decided to give it a shot! I am definitely impressed and enjoyed building it every step of the way! The thing is massive for the cost! If Lego put out more sets with value that mimic this McLaren Senna GTR set, I think a lot more people could justify purchasing kits in the future! Build time I'm not sure about! I actually did a Twitch game/build stream so it took way longer than just building it alone would take! Stream was 13 hours, but I would guess maybe 4-6 hours depending on how quickly you build! Very sturdy set with only the doors being a bit flimsy, but not to any point of falling off the build itself! You can steer the car with the knob on top which is neat! And of course, the engines crankshaft and pistons move while rolling the car! Super awesome touches squeezed inside! Very impressed, a great show piece addition to my game room! If your thinking about grabbing this, do before it's gone!! ... show more
Reviewed in the United States on January 5, 2021 by Erik
    • Excellent
Quality build
Reviewed in the United States on May 15, 2026 by Jeff Russell
    • Lego technic
Nice
Reviewed in the United States on June 1, 2026 by Magnolia
    • Experience required
Quality, design, are both 10 out of 10. But! If this is your first time, age does not matter, it will take you at least four hours to put together. If you are buying this for a 10 year old, as the box suggest, it will still be difficult for them, as it was for me and I’m 27. But, like I said, this was my first time. I still had fun, putting it together, and it is bigger than I thought it would be. Because all of the promotional material and the pictures in the reviews, made it look smaller than it is, once built. Great bargain for the price, they could easily ask $80+ and it’d still be worth the purchase. The ONLY reason why I did not rate this a 5/5 stars is because of the learning curve. The more experienced you are, the shorter the build time. Even if this is your first time playing with Legos, I believe anyone can put this together. Although, if they are under 10, then parental assistance may be necessary. Great for S.T.E.M. children! ... show more
Reviewed in the United States on July 25, 2023 by Eddie Paul
    • Awesome Lego McLaren!
Awesome build! My son took half a day to build this!
Reviewed in the United States on March 30, 2026 by Eric

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