The Crazy Queen is a premium commercial seated leg extension, that also converts with a quick shift of the seat into a prone leg curl. Designed in a modern “industrial” style, using Kingsbox’s signature 80×80 profile sections and cutout details. Laser cut logos, beautifully powder-coated steel and premium upholstery give the Crazy Queen her signature look.

Thanks to the isolateral design you can train each leg separately. This helps reduce strength imbalances between your legs. The Crazy Queen is a plate-loaded leg machine compatible with any 50 mm hole diameter weight plates.