LEGO Technic sets feature realistic movements and mechanisms that introduce young LEGO builders to the universe of engineering in an approachable and realistic way Suitable for ages seven and up Set contains 151 pieces for a satisfying build experience Steering and a three-piston engine connected to the rear wheel by a chain let kids explore mechanical functions Build with confidence using the LEGO Builder app, which offers 3D zoom, rotate, and progress tracking This building set lets kids see how different parts of a motorcycle work, providing insight into engineering concepts as they develop new STEM skills Captures the imaginations of young vehicle fans as they build, explore, and play with their motorcycle model kit