LEGO Technic App-Controlled Cat® D11 Bulldozer 42131

LEGO Technic App-Controlled Cat® D11 Bulldozer 42131

Experience the ultimate in construction power and accuracy with the LEGO Technic App-Controlled Cat D11 Bulldozer 42131, a cutting-edge building set that honors one of the greatest machines ever conceived. Designed for adult builders and enthusiasts, this LEGO Technic masterpiece captures the power, maneuverability, and engineering expertise of the real Caterpillar D11. Featuring authentic details, motorized functions, and smart app connection, it offers a full and rewarding build experience unlike anything else.

A Real Engineering Achievement

The LEGO Technic App-Controlled Cat D11 Bulldozer 42131 enables you to explore mechanical design on a grand scale. Built in modular pieces just as the real machine, the set is defined by great realism from its mighty tracks to its operational blade and ripper. The builder will enjoy the authenticity of the new-for-2021 Technic track element, which has the ability to loosen and tighten for realistic movement. Every detail, from the bold yellow and black color scheme to the Caterpillar logo — speaks to LEGO's attention to detail and commitment to authenticity.

This LEGO Technic bulldozer is powered by smart motors and hub that team up to bring it to life with the LEGO CONTROL+ app. Once you've built it, the experience changes from build to operate, where you'll have complete control over every movement of your model.

Smart App Control and Realistic Functions

Bring your LEGO Technic App-Controlled Cat D11 Bulldozer 42131 to life with the LEGO CONTROL+ app. Using your smartphone, operate, steer, and control the primary functions of the dozer. Raise, lower, and tilt the massive front blade, swing the ripper up and down, or shift the ladder — all with realistic, responding motion. Interactive feedback via the app gives a hands-on, virtual building experience that feels like handling the real one.

This LEGO Technic series includes two no.15 motors, two large motors, and one hub for precision-powered control (6 x AA batteries not included). 

Built to Display and Play

Standing over 10 inches (26 cm) high, 22 inches (57 cm) long, and 14.5 inches (37 cm) wide, the LEGO Technic App-Controlled Cat D11 Bulldozer 42131 is a commanding display piece. Its scale and accuracy make it perfect for showcasing on a desk, shelf, or collection display. Whether you’re fascinated by heavy machinery or passionate about mechanical builds, this model embodies the best of LEGO Technic innovation and realism.

Quality Engineering, Built to Last

Like all LEGO Technic sets, this set is constructed to the highest quality and safety standards. All components are engineered to endure for longevity, reliability, and flawless compatibility. The LEGO Technic App-Controlled Cat D11 Bulldozer 42131 comes with an challenging and very rewarding build process — a sheer delight of engineering skill and creativity.

Product Highlights

• Brand: LEGO®
• Model: LEGO Technic App-Controlled Cat® D11 Bulldozer 42131
• Color: Yellow and Black
• Pieces: 3,854
• Features: App control, motorized blade and ripper, modular build, functional tracks
• Motors: 2 no.15 motors, 2 large motors, 1 hub (batteries required)
• Dimensions: 26 cm (H) × 57 cm (L) × 37 cm (W)
• Age Recommendation: 18+

Shop LEGO® in Australia

Bring home the LEGO Technic App-Controlled Cat D11 Bulldozer 42131, now available only from Brick Island, your go-to LEGO shop in Australia.

Check out our complete collection of LEGO Technic for more intricate designs, advanced engineering models, and display sets for serious fans of all ages.