When Trash shoots the bounty hunter with the grappling hook, he shoots it at his stomach. After he ties it to the bike and drives off dragging the bounty hunter, the hook is now in his back.
In the final battles scene, when the mounted police officers shot and burn with flamethrowers some of the members of Ogre's and Trash's gang, it can be clearly seen that the same 6 scenes of people getting burned or shot are repeatedly used from different angles to appear as a massacre. These short scenes of around 5 seconds each were used for almost 7 minutes. It is also obvious from some of the angles that the flames are nowhere near the victims.
Blade (played by Massimo Vanni) rides a Kawasaki KZ750B twin throughout the movie, but in a scene where he is shown riding down some stairs, he is clearly riding a trials or motocross bike. The front mudguard is mounted directly under the headlight, not over the front tyre as it is on the KZ750, the engine note is also far higher than that of the Kawasaki. The size, weight and manoeuvrability of the Kawasaki would have made the stunt far more dangerous, if not impossible.
During the fight with Golan, Ogre (Fred Williamson) curls his hand into a fist with much theatrics. However, in the next shot, his hand is open again.
Anne is shot once by the policeman - yet there are 2 distinct bullet marks on Anne's blue shirt afterwards.
When the Biker couple are shot on the stairs you can see the outline of blood packs under their shirts.
In the first few minutes, the text on the screen reads in part "...The authorities give up all attemps..", misspelling 'attempts'.
In many scenes, the audio for the voice of actor Mark Gregory is out of sync. Showing that there was a voiceover as The lead actor couldn't speak English well . Mark Gregory (Trash) is a Italian native.
In the end battle scene between the gangs and the police a crew member with a baseball cap is in shot for a brief period. You can see the person trying to duck out of shot quickly!.
In the end battle scene Ogre is shown confronting a mounted policeman. As the horse falls over you can see reinforced matting briefly on the side of the horse to prevent injury.
You can see a camera crew visible in Hammer's sunglasses just before he shoots the biker couple on the stairs.
In the final battle, the cops wielding the flamethrowers are clearly shooting them at panes of glass to protect the actors and stunt people.
Several scenes are very obviously filmed in Brooklyn, not The Bronx.
A major plot point is that Bronx has become nearly impossible to commute due to numerous gangs, and that even the shortest journeys are extremely dangerous. However, certain characters inexplicably don't have this problem at random times, most notably Hammer, who manages to freely move around Bronx and even leave and re-enter it without any difficulty.