See: XRAY

XRAY have introduced the V2 version of the rear Aerodisk wheels with 12mm internal hex specially-designed for XB2 and XB4. They are made from flexible and durable material to withstand impacts while the center countersunk area was redesigned to place the wheel nut deeper. Special features of the wheel are visible from the inside with the reinforcement ribs to make the wheels as stable as possible and eliminate deformation while the side of the wheel is aerodynamic for maximum performance.