Zanjeer' s title music was reused in the film. It appeared in the opening title credits of the film. Zanjeer's Title Music was sampled from Jerry Goldsmith's "The Last Run" main theme music. Other version's of the song are Eija Merila's "Viimeinen mahdollisuus" and Tapio Liinoja's " Viimeinen mahdollisuus".
This movie was remade in Tamil by Rajnikant and was named Siva.
Rakesh Kumar's first film as director, he was the assistant of Prakash Mehra.
The day that Amitabh was shooting the fight scene with the tiger was the day that his son Abhishek Bachchan was born.
The tiger that Amitabh fights with in this film was a tigress called Bharati. She also appeared with Amitabh in "Mr.Natwarlal"