Knog calls Yuma's motorcycle a "red hot American classic," but it's obviously a Kawasaki KZ-1000 Police edition.
In the final showdown, the "Goods & Needs" store is shown with nothing near the entrance. A few seconds later, a station wagon appears at the curb.
During the final chase, Quantrell and Yuma never change direction, but manage to drive past the same abandoned station wagon several times.
Near the end, Yuma is holding and firing an M2 .50 caliber, heavy machine gun. Since these weapons weigh hundreds of pounds, one would have to be either Superman or the Terminator to accomplish this.
In numerous scenes, characters are shown shooting their semiautomatic pistols to slide-lock, yet their guns keep "firing".
Yuma opens his coat to reveal an M2 .50-caliber machine gun. It's implied that he's carrying it on a sling, yet when he fires it it's obviously on a stationary mount.
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