 The empennage of the MiG-21 consists of a vertical stabilizer, a stabilator and a small fin on the bottom of the tail to improve yaw control.The vertical stabilizer has a sweep angle of 60° and an area of 5.32 m² (on earlier version 3.8 m²) and a rudder.The stabilator has a sweep angle of 57°, an area of 3.94 m² and a span of 2.6 m.

The MiG-21 uses a tricycle type undercarriage.