200% more impact-resistant, 200% more durable and without any added weight compared to conventional carbon frames: the frame of the newly developed Kelly THEOS F 2021 is made of a thermoplastic steel-carbon composite called FEATHER, supposedly ringing in a new era in ebike technology. Read on to find out what this promising bike is all … Continue reading Carbon revolution? New 2021 Kellys THEOS F eMTB featuring REIN4CED’s steel-carbon composite and a 720 Wh battery