'Buckwild' Stars -- We Made a Sex Tape Too!

A couple of "Buckwild" Stars are horning in on Farrah Abraham's sex tape territory ... TMZ has learned.

The stars are on-again-off-again couple Shae Bradley and Jesse J -- and they engage in what we're told is "trailer park sex." Translation -- nothing fancy, down and dirty and a tad tacky -- she doesn't even take her shirt off.

We're told "Buckwild" producers knew about the tape before they started shooting the show, and told Shae and Jesse to keep their mouths shut. But now that the show has gotten the ax, it's being shopped around.

Unlike our fair Farrah, it's unclear if Shae and Jesse are behind the possible sale of the XXX vid.

Shae tells TMZ, "Yes there is a sex tape and I regret making it with someone who I obviously couldn't trust and is looking to exploit the relationship we had."