LEGO 42131 App-Controlled Cat D11 Bulldozer - Technic
Celebrate a hero of the construction world as you build a replica version of the biggest Cat bulldozer with this LEGO Technic App-Controlled Cat D11 Bulldozer (42131) building set for adults. This large LEGO set lets adult fans enjoy quality ‘me time’ focusing on their passion. Just like the real Cat bulldozer, this construction vehicle 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! There are lots to discover with many authentic features and functions packed into this remote app-controlled motor vehicle. Use the CONTROL+ app to drive, steer and explore this heavy-duty machine. The app delivers realistic movement as you raise, lower and tilt the blade or raise and lower the ripper and ladder. LEGO Technic buildable models feature realistic movement and mechanisms that let LEGO builders explore engineering concepts in an approachable and realistic way. Part of a collection of premium-quality LEGO building sets for adults, this model comes with clear instructions and makes the best gift idea for yourself, LEGO fans, and lovers of all motor vehicles.
Celebrate a hero of the construction world as you build a replica version of the biggest Cat bulldozer with this LEGO Technic App-Controlled Cat D11 Bulldozer (42131) building set for adults. This large LEGO set lets adult fans enjoy quality ‘me time’ focusing on their passion. Just like the real Cat bulldozer, this construction vehicle 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! There are lots to discover with many authentic features and functions packed into this remote app-controlled motor vehicle. Use the CONTROL+ app to drive, steer and explore this heavy-duty machine. The app delivers realistic movement as you raise, lower and tilt the blade or raise and lower the ripper and ladder. LEGO Technic buildable models feature realistic movement and mechanisms that let LEGO builders explore engineering concepts in an approachable and realistic way. Part of a collection of premium-quality LEGO building sets for adults, this model comes with clear instructions and makes the best gift idea for yourself, LEGO fans, and lovers of all motor vehicles.
Celebrate a hero of the construction world as you build a replica version of the biggest Cat bulldozer with this LEGO Technic App-Controlled Cat D11 Bulldozer (42131) building set for adults. This large LEGO set lets adult fans enjoy quality ‘me time’ focusing on their passion. Just like the real Cat bulldozer, this construction vehicle 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! There are lots to discover with many authentic features and functions packed into this remote app-controlled motor vehicle. Use the CONTROL+ app to drive, steer and explore this heavy-duty machine. The app delivers realistic movement as you raise, lower and tilt the blade or raise and lower the ripper and ladder. LEGO Technic buildable models feature realistic movement and mechanisms that let LEGO builders explore engineering concepts in an approachable and realistic way. Part of a collection of premium-quality LEGO building sets for adults, this model comes with clear instructions and makes the best gift idea for yourself, LEGO fans, and lovers of all motor vehicles.
Celebrate a hero of the construction world as you build a replica version of the biggest Cat bulldozer with this LEGO Technic App-Controlled Cat D11 Bulldozer (42131) building set for adults. This large LEGO set lets adult fans enjoy quality ‘me time’ focusing on their passion. Just like the real Cat bulldozer, this construction vehicle 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! There are lots to discover with many authentic features and functions packed into this remote app-controlled motor vehicle. Use the CONTROL+ app to drive, steer and explore this heavy-duty machine. The app delivers realistic movement as you raise, lower and tilt the blade or raise and lower the ripper and ladder. LEGO Technic buildable models feature realistic movement and mechanisms that let LEGO builders explore engineering concepts in an approachable and realistic way. Part of a collection of premium-quality LEGO building sets for adults, this model comes with clear instructions and makes the best gift idea for yourself, LEGO fans, and lovers of all motor vehicles.
in 3 offers
The lowest price for LEGO 42131 App-Controlled Cat D11 Bulldozer - Technic right now is $869.00 at Harvey Norman, compared across 3 retailers.
The all-time low was $749.99 on 19 Mar 2026 — today's price is 16% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 6 June 2026.
Last updated at 06/06/2026 01:34:45
LEGO 42131 Technic App-Controlled Cat D11 Bulldozer, Model Building Set for Adults, Remote Control Construction Motor Vehicle
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Lego Technic 42131 App-Controlled Cat D11 Bulldozer
Lego 42131 Technic App Controlled Cat D11 Bulldozer Sealed Retired Set
Delivery $23.07
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on ebay.com
I have built a lot of Lego sets and this one by far is my favorite. You can really drive it around and use the blade to push stuff. The best part is the powered ladder that you can put up or down. Everything can be done from your cellphone. Incredible Lego set. Would definitely recommend to anyone.
originally posted on ebay.com
This machine keeps you on your toes, its challenging, intricate, and entertaining. I am of the older generation, and this model gets the brain active, and its better than watching daytime television. If all the models are like this, keep them coming.
originally posted on Smyths Toys
Bought this lego set of smyths and was very well packed and fast postage. As for the lego set itself is truly amazing and very well made. Everything goes together well and instructions are spot on. If you are thinking of buying then go for it you wont regret it !!!
| Features | |
| Material | Plastic |
| Country of origin | Indonesia |
| Sound effects | N |
| Number of pieces | 3854 pc(s) |
LEGO 42131 Technic App-Controlled Cat D11 Bulldozer, Model Building Set for Adults, Remote Control Construction Motor Vehicle
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Lego Technic 42131 App-Controlled Cat D11 Bulldozer
Lego 42131 Technic App Controlled Cat D11 Bulldozer Sealed Retired Set
Delivery $23.07
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
I have built a lot of Lego sets and this one by far is my favorite. You can really drive it around and use the blade to push stuff. The best part is the powered ladder that you can put up or down. Everything can be done from your cellphone. Incredible Lego set. Would definitely recommend to anyone.
This machine keeps you on your toes, its challenging, intricate, and entertaining. I am of the older generation, and this model gets the brain active, and its better than watching daytime television. If all the models are like this, keep them coming.
Bought this lego set of smyths and was very well packed and fast postage. As for the lego set itself is truly amazing and very well made. Everything goes together well and instructions are spot on. If you are thinking of buying then go for it you wont regret it !!!
One of my favourite builds, one of the best too! I get to actually drive these things in real life and you guys did a great job of making it work plus the controls and stuff, it would have been cool to add another motor and 2 more actuator rams for the ripper to simulate the real thing but really good build thank you
I love these massive Technics sets, and I have to say this is one of the best I've built. A really involved, technical build where it feels like you are building for days, and then all of a sudden it all comes together. A technical masterpiece, and fun to play with once built too!!As a fan of GoldRush and Lego technics, between this, the front loader and the rock truck I feel ready to tackle the Yukon!!!
I am an operator of a d11 and can say that the d11 technic dozer is a very accurate representation of the real life thing. The ripper works, the blade moves up and down and also tilts. The use of a motor for each track gives it the ability to screw like a real dozer. My first technic set and I loved it.
I have made several of these large Lego Technic app controlled models and this was the most complex but very rewarding to assemble. Although it doesn’t have as many actions as some of the controlled models, the ones it does have work well ….if you built the model correctly! Overall a very good model.
Build was going great until test mode on page 169 of book #1 not doing what it should app telling me to check build, having already read a review of this set before purchase it highlights page 115 orange 2 hole beam in relation to the orange gear sector ring after checking this right. Test mode still not working as should. Rang Lego customer service no help there so I continued to build to completion placed batteries back in app on and the Cat started to purrrrrr.
Even though the price went up, it was well worth it, I bought it for my 20 year old son hows been lego mad since 3 old, it drove his father mad & didn't wonted much 2 do will it, But this time he axley sat down & got involved & helped build it. LOL 😂.
Ive been putting lego Mould King and tons of other brands together for a while i really enjoyed this one it was very unique! I put it together In around five days ! (Remember my leg messed up since August) i cant move normally ! So i dont sleep much ! If pain comes around i keep my mind occupied ! Dont like drugs! So. Lego the way to do it!
| Features | |
| Material | Plastic |
| Country of origin | Indonesia |
| Sound effects | N |
| Number of pieces | 3854 pc(s) |
