This LEGO Technic McLaren Senna GTR (42123) is a great choice – and adult McLaren fans will love it too! Lego Technic McLaren Senna GTR. The McLaren Senna GTR is a car unlike any other. Check out this supercar toy model’s authentic features, like the detailed V8 engine with moving pistons and dihedral doors that open ‘up and out' in the unmistakable style of the real McLaren.
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