

LEGO Technic App-Controlled Cat® D11 Bulldozer 42131
Key item features
- Detailed Construction: Build a mighty construction vehicle packed with details with this huge LEGO Technic App-Controlled Cat D11 Bulldozer 42131 model building set for adults
- Realistic Movement: Enjoy a rewarding build, then explore the model's many features and functions, including the new-for-October-2021 LEGO track element
- Perfect Gift: Ideal for fans of Cat bulldozers and other cool vehicles, making it a top gift idea
- Impressive Size: This Cat replica measures over 10 in. (26 cm) high, 22 in. (57 cm) long, and 14.5 in. (37 cm) wide
- Battery Requirements: Requires 6 x AA batteries (not included) and includes 2 x no. 15 motors, 2 x large motors, and 1 x hub
- App-Controlled Features: Use the CONTROL+ app to drive, steer, raise, lower, and tilt the blade, as well as raise and lower the ripper and ladder
- Engineering Exploration: LEGO Technic models feature realistic movement and mechanisms, allowing builders to explore engineering concepts in an approachable way
Specs
- BrandLEGO
- ThemeLEGO Technic
- Piece count3854
- Minimum recommended age18 years
- FeaturesCollectible
- Edu focusEngineering
Reviews summary
Pros
- : Features precise details both up close and from a distance.
- : Features intricate and realistic models with clear instructions.
- : Features attention to detail.
- : Comes with a comprehensive manual to aid assembly.
- : Allows precise control of bulldozer's movements via mobile app.
Cons
- : Offers less value compared to similar products at lower prices.
- Free shipping
Free 30-day returns
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About this item
Product details
Celebrate a hero of the construction world as you build a replica version of the biggest Cat dozer with this LEGO Technic App-Controlled Cat D11 Bulldozer (42131) kit. This large set lets adults enjoy quality ‘me time focusing on their passion. Just like the real Cat bulldozer, this model is built in modular sections. LEGO fans will love the new-for-October-2021 LEGO element – a large track that can be tightened and loosened. And the build is just the start! With many authentic features and functions packed into this model, there are lots to discover. Take control of your bulldozer model. Use the CONTROL+ app to operate and explore this heavy-duty machine. Use the app to drive and steer. The app delivers realistic movement as you raise, lower, and tilt the blade or raise and lower the ripper and ladder. Explore engineering LEGO Technic buildable models feature realistic movement and mechanisms that let LEGO builders explore engineering concepts in an approachable and realistic way.
- Build a mighty construction vehicle packed with details with this huge LEGO® Technic™ App-Controlled Cat® D11 Bulldozer 42131 model building set for adults
- Enjoy a rewarding build, then explore the model’s many features and functions. See the new-for-October-2021 LEGO® track element that gives the bulldozer its realistic movement
- Looking for the best gifts for yourself or any fan of Cat® bulldozers and other cool vehicles? This impressive construction vehicle set makes a top gift idea
- This Cat® replica measures over 10 in. (26 cm) high, 22 in. (57 cm) long, and 14.5 in. (37 cm) wide
- Requires 6 x AA batteries (not included). The set also includes 2 x no. 15 motors, 2 x large motors, and 1 x hub
Specifications
Brand
Theme
Piece count
Minimum recommended age
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Ingredients
Ingredients
LEGO Building Elements
Warnings
Ingestion Hazard
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Customer ratings & reviews
Reviews summary
Pros
- : Features precise details both up close and from a distance.
- : Features intricate and realistic models with clear instructions.
- : Features attention to detail.
- : Comes with a comprehensive manual to aid assembly.
- : Allows precise control of bulldozer's movements via mobile app.
Cons
- : Offers less value compared to similar products at lower prices.
Customer photos






+22 images
Showing 1-3 of 69 reviews
Stunning and gorgeous model.!
[This review was collected as part of a promotion.] This was my very first Lego Technic set and wow this really is a stunning and absolutely gorgeous model, along with an interesting build design. Surprised how big this machine is and the functions all work pretty decent. Took me and my partner over a week to build, couldn't do it when kids were around so had plenty of breaks.. we enjoyed building this set together it was fun and sometimes challenging but what an experience.! We loved building it together. Good job Lego.! Once built just download the free app to control the bulldozer very simple to use. My friend has the Liebherr model and in comparison Liebherr has 7 motors and 2 hubs, while this only has 4 motors and 1 hub. I think Liebherr has more functions to play around with.. but they both look beautiful and stunning at the end of the day. Overall this bulldozer is a pretty cool set but definitely over priced in my opinion. Highly recommend for the construction vehicle lovers.!
Realistic model, very detailed, fun to build
[This review was collected as part of a promotion.] The Lego Cat D11 app-controlled bulldozer is a fantastic addition to the Technic range. It is an incredibly rewarding build. The model is ultra-realistic with amazing authentic details and features which you can explore as you progress with the build and visibly see thanks to the large size. The app controls work flawlessly and really bring this heavy-duty machine to life! This is a great set to buy for yourself or as a gift. It will give long hours of challenging and focussed building experience.
Outstanding
Absolutely the best set we have ever built. It took me and my 18 year old Grandson a couple of weeks to build this, it is not for the faint of heart. The detail and precision are superb. My grandson is training to be a heavy duty mechanic, so this was right up his ally! He now wants to take it to his class to show them the module nature of a CAT build. Well done LEGO, your best yet!
Thank you for sharing that you and your grandson had fun building this challenging set together!
