Build your own construction icon

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’s lots to discover.

• 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.
• Use the CONTROL+ app to operate your bulldozer. Bring the bulldozer model to life as you drive and steer, then raise, lower and tilt the blade or raise and lower the ripper and ladder.
• 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.

The default box condition is “Minimal Shelf-Wear” unless there is a drop down option/menu. Here at Brickollector we want you to make an informed purchase so we have developed our own box condition grading system below. This way you can have an idea (with our best intentions) of what to expect when you receive your LEGO from us. We will pack your order to the best of our ability but occasionally LEGO boxes can get damaged from courier services.

Sometimes boxes may have price sticker or security sticker on them. They are NOT treated as "damaged" at Brickollector. We do not remove these in fear of causing damage to the box. Please note that we are not brave enough to classify boxes as perfect (even if we think they are) so we will only go as far as 9.5/10. If you are a box collector and want us to send you close up photos of the box we may be able to accommodate such requests on a case by case basis.

If seals have been broken due to Customs inspection we will describe the box condition as such. We also reduce the prices accordingly based on how much damage the box has sustained.