








🚧 Dig into creativity with the ultimate heavy-duty build!
The LEGO 42121 Technic Heavy-Duty Excavator is a 569-piece construction set designed for ages 8 and up, featuring realistic moving parts like a shovel, arm, and running belts. It offers an engaging 1.5-hour build that enhances creative thinking and dexterity, all while meeting LEGO’s strict safety and quality standards. Perfect for professionals seeking a sophisticated, hands-on model that blends fun with engineering precision.
| ASIN | B08G4CKL16 |
| Assembly Required | Yes |
| Batteries | 2 AA batteries required. |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 132,357 in Toys & Games ( See Top 100 in Toys & Games ) 3,920 in Toy Building Sets |
| Colour | Multicolor |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,679) |
| Date First Available | 1 Mar. 2021 |
| Educational Objective(s) | Creative Thinking, Dexterity |
| Item model number | 42121 |
| Language | English |
| Manufacturer recommended age | 8 years and up |
| Material Type(s) | Plastic |
| Number of pieces | 569 |
| Product Dimensions | 28.2 x 26.2 x 7.6 cm; 640 g |
| Release date | 1 Mar. 2021 |
| Remote Control Included? | No |
| Scale | LEGO® TECHNIC |
M**N
A very study and entertaining model!
I'e always loved Lego Technic and have recently started to buy models as future investments. Not this one though, this one needed to be built and I'm glad i did! It took me about 1 1/2 hours to build, but I found the whole process simple and easy to follow. Its surprisingly study as well and has survived many fights with my twins girls who are both fascinated with lego now....no that i can let them build anything yet (they are 2 years old!) For the money, its well worth it!
G**.
Looks good
It's Lego, so it goes without saying that it's a quality product. Good fitting pieces ( none mssing) and excellent instructions. I don't know if it's me, but for £60 it didn't take that long to complete. Good looking, working model non the less.
P**E
Good investment, money well spent. Lovely set.
A lovely, satisfying set to build. Bags are numbered from 1-4. Instructions are easy to follow. Each numbered bag covers a section in the instructions. Building the 86 link drive chain(43 links per side.) requires concentration and discipline. In conclusion: A worthy investment, value for money. All bricks/pieces fit well together. End result satisfying.
L**H
Better than a jigsaw.
As a Lego model it is really good and enjoyable to put together but if there is a slight complaint it is with the name and the way it is advertised, it seams a bit on the small side compared to the car transporter. Thanks Les.
P**L
Lego technic
I’ve loved Lego from being a kid and their technic stuff is fantastic, this excavator was great fun to build, coming alive the more you built, the model is fantastic with working arm and bucket, the only downside to Lego is the stickers, I hate stickers, but they do make the excavator look great.
D**N
Amazing detail
I bought this lego set fairly recently. It was cheaper than I had expected and arrived a couple days later. The instructions were very easy to follow and I had a lot of fun building it. I loved being able to see all the mechanics and detail put into the set while I was building it. It looks amazing when finished and works like a real digger.
R**T
Perfect for kids who like machinery
The product was put together by my 9 year old, he loves Lego but this seems to be his favourite. It’s the best of all worlds the claw moves by rotating a knob. For those kids who enjoy playing with tractors/excavators and the like this really does leave them feeling rewarded for their patience.
M**H
Good
Good quality that I have come to expect from Lego. Kids enjoyed building. It’s not too complicated to build which is a plus.
N**S
Snabb leverans. Enligt beskrivning.
J**N
砂地を走るキャタピラ 角度がついても回転可能能なRCジョイント ターンテーブル機構 メカ好きの子には垂涎の一品 飽きるのが早かったですね
M**L
Oğlumuza hediye aldık 4 yaşında ama eşimle sabah 05:00 e kadar biz kendimiz yaptık sabah uyandığında müthiş bir sürpriz oldu :) yapması çok keyifliydi indirimli fiyattan almak daha keyifliydi kesinlikle tavsiye ederim sorunsuz kargo kaliteli ürün.
P**N
It's a great lego set for everyone
F**R
Schönes Set und das neuste Bauprojekt für mich und meinen Sohn (fast 5). Mit dem nötigen Interesse an Technik und etwas Hilfe vom Papa sind wir zusammen gut voran gekommen. Die Bauteile sind in einzelne Tütchen aufgeteilt, mit denen sich die einzelnen Bauphasen erledigen lassen. So konnten wir das Projekt auf mehrere Sessions aufteilen und Zwischenerfolge gefeiert werden. Zudem lässt sich dadurch einfacher Ordnung halten und die benötigten Teile werden zügig gefunden. Technisch ist das Modell deutlich komplexer, als unsere vorherigen. Ein Monstertruck und ein Gabelstapler zuvor hatten wenig bis keine beweglichem Teile und haben uns geholfen, an die neuen Bauteile zu gewöhnen. Bei diesem Bagger gibt es nun einen komplexen Schaufelarm mit Hydraulik und der Bagger steht auf Ketten. Mein Sohn liebt das und wir fühlen uns beide wie richtige Ingenieure. Sofern das Kind den Aufbau alleine bewältigen soll, ist es vermutlich ratsam, sich grob an die Alterempfehlung zu halten. So für uns ist es aber perfekt und wir freuen uns schon auf unser nächstes Projekt. Vielleicht was mit elektrischem Antrieb?
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