App-Controlled Cat® D11 Bulldozer 42131 | Technic™ | Buy online at the Official LEGO® Shop US
First look at the LEGO Technic 42131 CAT D11 Bulldozer! - Jay's Brick Blog
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LEGO MOC 42131 CAT D11 Bulldozer Upgrade v2.0 by A_C | Rebrickable - Build with LEGO