Aura pro is an entry level carbon fiber bar for all types of solo race against the clock aura shares its basic architecture with mistral but its carbon fiber basebar has a simplified top skin and top mounted extension clamps it lacks mistrals multiple elbow rest positions but is lighter alloy s bend extensions set 80 mm apart sit in clamps on the basebars top surface and provide up to 305 mm extension from the stems centerline riser kits permit the clamps to be raised up to 60 mm above