The bikes used in the film are the Suzuki Hayabusa (1300cc), the Suzuki GSX-R600 (600cc) and the Suzuki Bandit (1200cc).
Originally the movie was supposed to have top-of-the-line sports cars. Then the director, Sanjay Gadhvi decided to have motorcycles because the actors' faces could be seen clearly. Also, he was crazy about motorcycles when he was young.
The music director, Pritam Chakraborty, had a tough time composing "Dhoom Dhoom." Apparently, Tata Young, no matter how much she tried, pronounced the word "Dhoom" as "Doom." It was eventually left that way.
Sanjay Gadhvi had shot extensive portions of sex scenes between Abhishek Bachchan and Rimi Sen. However, Gadhvi was apprehensive as the explicit sex scenes between Bachchan and Sen might not go well with the Indian audience. Therefore, he decided to cut these scenes from the film.
Yash Chopra had signed Sanjay Dutt for John Abraham's role. Due to date complications, Dutt opted out. That's when Aditya Chopra decided to cast a younger face in the villain's role.