It's Not a Model. It Actually Runs. Other brick sets give you one gear, forever. This one gives you a transmission you actually shift. You build the BioBricks Valkyrie V12 with your own hands. Then you flip the switch. The pistons pump, the camshaft rotates, the fan spins — and you shift through 2 real speeds as power moves through the entire engine. This isn't a display piece. It's a V12 with a gearbox you control, built by you. What you get: ⚙️ A working 2-speed transmission — shift gears and watch the power shift throughout the entire engine. 🔧 Real mechanical motion — pistons pump, camshaft rotates, fan spins, all in real time. 🥇 Gold, black, and silver design — looks pulled straight from a race shop. 🔧 974 pieces to build — hours of satisfying, screen-free build time. 📖 Zero guesswork — full-color instructions walk you through every step. 🔋 Ready out of the box — motor and battery box included. Just add batteries and go. Build it once. Shift it forever.
