These Thunder Black Hard Lowers provide an Indian Motorcycle® rider with outstanding control over airflow from the front end of the motorcycle, and they put extra storage conveniently within reach. These lowers features two adjustable air controls that let a rider determine how much airflow reaches the rider’s lower body. In warm weather, a rider can adjust the air controls to allow full airflow, and when it’s cool, the controls can be set to block cold airflow. When closed, the air controls also effectively block rain. The Inner Assembly kit (sold separately) puts extra storage within reach of the rider’s hands.