The LEGO Technic App-Controlled Cat D11 Bulldozer Set 42131 in Yellow/Black is a 3,854-piece engineering marvel that brings the world’s largest mechanical bulldozer to your living room floor.

Specs:

• 3,854 pieces for an immersive, advanced building experience
• App-controlled via LEGO Technic Control+ on a compatible smartphone
• Features a controllable front blade for realistic earthmoving action
• Includes a functioning rear ripper for simulated ground-breaking tasks
• Equipped with motorized, adjustable tracks that replicate the real Cat D11’s mobility
• Designed for unisex builders aged 18 and up
• Released on October 1st, 2021 as part of the LEGO Technic lineup

Set 42131 is a standout in the LEGO Technic catalog, packed with true-to-life mechanisms like the controllable blade and ripper that mimic the real Cat D11’s heavy-duty performance. The adjustable tracks and app-driven controls make this a hands-on challenge for adult builders who appreciate mechanical authenticity. This bulldozer is built for display or simulated construction play.