In the mid-credits scene, on the wall of Dante's office is a fight poster that reads,"Segal Vs Ewing". This is a reference to the film producers Peter Segal and Michael Ewing. The same poster reads "Osbrink vs King" in a reference to the talent scouts/promoters Cindy Osbrink (Hollywood) and Don King (boxing), as well as "Gerber vs Mehta" referring to the film's producers Bill Gerber and Ravi D. Mehta .
In one scene Razor trains at an auto junk yard, through towing a semi-truck named Road Hawk. This is a homage to Sylvester Stallone's character Lincoln Hawk(s)from the sports movie Over the Top (1987).
When Razor and The Kid are singing the National Anthem at the monster truck rally, there is a Winn Dixie sign seen in the stadium. Winn Dixie is only in the southeast, not Pittsburgh.
When Razor and Sally are talking in front of his house (across the street from railroad tracks) the background alternates from no trains to a stopped train to a moving train throughout the conversation.
During the final fight, there are signs at the Consol Energy Center for Pepsi Max. However, Pepsi is not sold at the Consol. Neither is Coca-Cola. RC Cola is the soft drink sold at the Consol.