The red form on the back of the chopper is the exoskeleton of the music cabinet. It's made of fiberglass, and the open sides will soon be completed with translucent panels similar to the ones used on the Soul Cycle Slim.
The cabinet is shaped to allow the suspension seatpost system to fully function. The high part on the form will soon support a passenger seat and backrest. The rear part of the form will support DJ equipment. A curved control panel will float above the handlebar area, giving a truly spacy finish to the chopper.