Build for real First introduced in 1977, the LEGO® Technic building system is made up of beams, gear wheels and axles, making it possible to recreate more complex models. Challenging yet rewarding, it offers advanced building sets for older kids and adults. Each detailed model is inspired by vehicles from the real world and always includes lots of realistic, working features. That’s why we say when you build with LEGO Technic, you Build for Real.