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LEGO Technic Heavy-Duty Excavator 42121 Toy Building Kit; A Cool Birthday or Anytime Gift for Kids Who Enjoy Construction Toys; The 2-in-1 Design Gives Hours More Building Fun, New 2021 (569 Pieces)

  • Based on 2,017 reviews
Condition: Collectible - Like New
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Availability: Only 1 left in stock, order soon!
Fulfilled by ABC Gifts and Awards
Arrives Sep 4 – Sep 6
Order within 6 hours and 45 minutes
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Features

  • Whether its a birthday, holiday, or just because gift, young construction fans will love building and exploring this 2-in-1 LEGO Technic Heavy-Duty Excavator (42121) toy set
  • Packed with realistic features, this digger toy set lets kids see how construction vehicles really work. Check out the moving shovel and arm, plus running belts, just like on a real excavator
  • When kids are ready for a new challenge, the 2-in-1 toy model rebuilds into a tracked tractor with backhoe
  • This cool excavator toy for kids is ideal for boys and girls aged 8 and up who love construction vehicles
  • With the authentic cabin and control panel to explore, its easy for kids to imagine life on a construction site with this cool excavator toy

Description

Looking for a special gift for kids who love construction toy sets? This 2-in-1 LEGO Technic Heavy-Duty Excavator (42121) toy has plenty of features for hours of creative play. Boys and girls aged 8 and up will enjoy an immersive building challenge before exploring the digger toy's realistic features. Digging, driving, rotating; there's so much to discover in this cool kids' excavator toy. Check out the shovel that moves up and down, plus the movable arm, running belts and rotating body. There’s also a detailed cabin with a driver’s seat and control panel. The set comes with extra LEGO brick ‘stones’ to dig and 4 cones. When it’s time for a new challenge, the model rebuilds into a tracked tractor with backhoe. The LEGO Technic universe offers advanced building toys for LEGO fans ready for their next challenge. With realistic mechanisms, these rewarding sets are a great way to introduce kids to the world of engineering.

Product Dimensions: 11.1 x 10.32 x 2.99 inches


Item Weight: 1.41 pounds


Item model number: 6328597


Manufacturer recommended age: 8 years and up


Release date: March 1, 2021


Manufacturer: LEGO


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 4 – Sep 6

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

    • its just great
Another great product from lego, everything when together and instruction were great to follow.All parts were there, With buying from lego all these years, which is a lot, I had just one time that a piece was missing and they send it right away after I contact them.
Reviewed in the United States on February 3, 2025 by ted
    • Was a lot of fun
Fun Lego project
Reviewed in the United States on January 6, 2025 by ..
    • Small but on-point
Note that the official piece count of 569 has a lot of empty calories: there are 90 pieces of drive track (45 for each side) that have to be linked together, and there are another 20 pieces of gray 1x2 studs that serve only as "rubble" that you can scoop up with the bucket. So that's almost 20% of the piece count right there. But that is my only reservation about this set. This set came out in 2021 and this is the type of set that I wish Lego would make more of in the Technic line: compact but full-featured (there are separate control knobs for arm height and bucket articulation, and it is very satisfying to coordinate the two knobs perfectly to scoop up items into the bucket. Plus the truck can swivel and roll on its tracks.) ... show more
Reviewed in the United States on May 9, 2022 by Christopher J. Pellerito
    • Excavator Review
This purchase was for my husband who likes to build with Lego's. He has not started building this one yet, but we have purchased many sets for our children and then our grandchildren and they are always great fun to build. Always a worthwhile purchase, especially for children instead of the usual junk toys. Not a bad "toy" for adults too! ... show more
Reviewed in the United States on July 16, 2023 by Juniquilt2day
    • My Intro to Lego Kits, Chose a Good One to Start
I love trucks and construction equipment....at age 80 decided to try this Lego kit...loved assembling it and love the finished model. Word of warning for newbies to Lego Technic kits. I just returned my second kit, the Porsche 911 RS racing model. After opening the box I discovered the bags of parts were not numbered in order of the assembly instructions. Apparently lots of Technic assemblers love the extra challenge of sorting through 6 or 7 bags of Lego pieces to find pieces, not me....returned it today, very disappointed. I don't know how to tell which kits have numbered bags, I'm gun shy about ordering more kits without knowing. ... show more
Reviewed in the United States on August 3, 2021 by rusgc
    • Fun
This is obviously a toy but fun to build. Lego has a number of adult kits that require patience and provide satisfaction upon completion. This was a lot less expensive and good exercise for the fingers.
Reviewed in the United States on May 4, 2023 by Ray A.
    • Great product - reliable seller
Challenging Lego Technic build project. Was seeking this specific item which is no longer in production. Happy to report I received a new in box item from a reliable seller. Would buy from again.
Reviewed in the United States on January 18, 2024 by Grim Tiki
    • Awesome backhoe with digging motions
For the price this is an amazing kit. I am an adult, and bought this for me, and will be buying my 8 year old nephew one as well. The bucket angle is tied to the angle of the second lever in the arm. There wouldn't be enough room to route a second control for a linear actuator, so that is a reasonable compromise. The bucket does mostly make a digging motion, so it can be used to scoop up some thing, then lift the whole arm on the other lever, and drop elsewhere. The tracks are also fairly cool. ... show more
Reviewed in the United States on March 8, 2021 by A. Hustvedt

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