Banger. was shot entirely on an iPhone 12 Pro Max. "Rap is a street music and I wanted Banger to feel like a street movie. The choice to shoot on an iPhone was not an effort to save money. The goal was to capture the story as faithfully as possible. I didn't want the camera to move the same way as in rap clips." said director Adam Sedlák.
Both Marcel Bendig and Vojtech Vodochodský, who play supporting roles in the film, were briefly considered for the leading part of Alex, eventually played by Adam Misík.
Director Adam Sedlák confided that he wanted his film to be the Pusher (1996) for the "tiktok generation".
The word "banger" in the rap scene means a good or good song.
It was filmed in 15 days.