6d atr 1 pilot helmetthe atr 1 pilot helmet is designed with omni directional suspension technology that uses a gel damper system at strategic locations that move in six different directions to absorb energy from impacts the atr 1 helmets are built with a vent that pulls fresh air in and evacuates hot air to keep the rider coola removable liner allows you to keep your helmet clean after every ride for the best in dirt bike protection the 6d atr 1 pilot helmet is in a league of its own feat