Vin Diesel, Dwayne Johnson and Jason Statham all signed contracts which meant they experience equal pain on Fast & Furious movies

The penultimate Fast and Furious movie is about to hit cinemas and the franchise's biggest stars, both in terms of name recognition and muscle mass, have some very particular details in their contracts.

It's a franchise all about tough guys driving cars around with lots of punches, explosions and general violence that chomps through the special effects budget.

It's all very entertaining to watch on screen but behind the scenes the biggest stars in the Fast and Furious series have some special contracts which dictates a lot of what goes on the big screen.

The final trailer for the (possibly) penultimate movie in the series Fast X has dropped and in it Jason Momoa's baddie Dante Reyes declares: "The game's over Dom. You lose."

However, that's unlikely to be the case in the end because the action movie mega-stars have got details in their contracts which dictate how the fight scenes go so none of them looks too bad on screen.

Universal Pictures

Apparently in several of the Fast and Furious movies Vin Diesel, Dwayne Johnson and Jason Statham had an 'equal pain' clause written into their contracts saying they all had to take basically the same amount of damage as each other.

This can trace its roots back to a squabble over the seventh movie as the Wall Street Journal reported that Diesel was worried that his character Dominic Toretto was getting punched too much by Statham's Deckard Shaw.

They said that Diesel suggested each blow landed by a character could be counted so that in the action scenes they could keep track of who was landing more hits and make sure it was even.

This was abandoned after being 'too complicated' to implement and it instead morphed into an 'equal pain' clause where none of the big names can come out of fights in the franchise looking like they've lost.

If one character takes a big hit then the others have to as well, and this is reportedly why in fight scenes between the characters something else has to come in and interrupt them before anyone loses.

Universal Pictures

While Fast X is supposed to be the second-to-last instalment in the series they might spin their big goodbye out into another movie.

Still, it's supposed to be the 'beginning of the end' for the movie franchise so be prepared for wistful mentions of 'family' and the idea that these guys can't keep doing this forever.

Before they can retire and ride off into the sunset they've got to contend with Momoa's villain first and he's been spotted in the movie's trailers doing lots of nefarious bad guy things which will make it all the more satisfying when Dom and the gang prove him wrong about them losing.

Fast X releases in cinemas on 19 May.