LEGO MOC 6-speed sequential gearbox by Whathetech | Rebrickable - Build with LEGO
Someone Made a Working Six-Speed Gearbox Out of Legos
Lego 6 speed gearbox | 3D CAD Model Library | GrabCAD
6-speed manual gearbox with reverse gear, made from Lego. One of the many car-related things I've made over the years.
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