I would consider looking into

Dragon

The Dragon is our halo product with a full carbon frame, articulated hinge, and a 9-speed Shimano Sora derailleur.

The beauty of the Dragon goes beyond its carbon-fiber frame and light weight. The Dragon rides, and handles, like the well-balanced machine that it is. The articulated hinge provides two pivot points and allows the main tube to be perfectly smooth thanks to the recessed release lever; this design also increases the strength and rigidity of the frame.

The Sora gear set outpaces the competition and provides crisp shifts and reliable performance.

origamibicycles.com/product/dragon/