“The Rip” starts out bloody and gets bloodier.

The dirty cops and drug money plot is messy. And turns messier.

It hits “preachy” hard, and then becomes even preachier.

The copshop cliches, quips and acronyms pass by in a blizzard of blue bloods blather.

And at some point, this “Fast and Furious” meets “Miami Vice” mashup gets in its own way. A drawn-out coda sees some intense and over-the-top performances from a cast headed by Matt Damon and Ben Affleck all but undone by overdone and over-explained final-act twists.

Hey, it’s a Joe Carnahan picture. The carnage and grit always comes with “Smokin’ Aces/A-Team” claptrap.

Damon is Dane, a detective lieutenant in charge of Miami’s TNT — Tactical Narcotics Team. We see his unit’s boss (Lena Esco) executed on the foggy ICW waterfront in an opening scene. That comes right after she assures a tipster that she’s “the only cop you can trust.”

Nobody in her squad seems A) all that surprised by her murder or B) all that torn up by her death.When it turns out Det. Sgt. Byrne (Affleck) was romantically involved with his captain, that seems kind of fishy.

But everybody here falls somewhere on the “sketchy” spectrum. The Major (Nestor Carbonell), detectives Ro (Steven Yeun), Baptiste (Teyana Taylor) and Salazar (Catalina Sandino Moreno), DEA commando (Kyle Chandler) and FBI hotheads (Scott Adkins, et al) asking the hard questions all come off as defensive — hiding something or fretting that someone else is.

“Snitch” is the dirty word that runs around dirty law enforcement circles. It’s what just broke up another acronym unit (VCAT — Violent Crime Action Team) that crossed lines, took shortcuts and worked for the bad guys — “cops playing robbers.”

An above-the-law afterwork parking lot party of burnouts and drifts and public beer drinking is broken up by a tip. There’s big cartel cash at this “stash house” in Hialeah. Let’er rip, TNT!

We watch the police lie to the woman (Sasha Calle) who comes to the door, get her signature of “consent” to search for drugs, and then unleash Wilbur, the beagle “who only tracks money.” It’s there, millions of dollars in contractor paint buckets. And no, it doesn’t pay to ponder why the seemingly savvy “homeowner” would sign anything or open the door to these people out to lock her

That’s when the paranoia busts out in the open — phones confiscated, loyalties tested, tips passed on and cold hard cash coveted by Miami’s “finest.”

“Do you trust our command structure?” “Do YOU?”

And those acronyms tattooed on Dane’s hands — “A.W.T.G.G.” (“Are we the good guys?”) and “W.A.A.W.B” — are explained and embraced, or exposed as the biggest lie of them all.

Carnahan taps into decades of tales of Florida policing corrupted by drug money with this plot and accidentally backs into the growing national disdain for out-of-control/law-unto-themselves law enforcement as we suspect everyone here, and with good reason.

The TNT cadre carries out its raids in tight-formation muscle car convoys. They count cash by the book while breaking protocol in every other way imaginable.

But this picture tries to have it not just both ways, but every which way but right. It’s “Blue Bloods” with cartel Crips and blood and the police “are just a gang in different ‘Colors,'” as many an ’80s urban policing thriller noted.

Fistfights between “brother” cops break out, temptations are openly discussed and we ponder a whole lot of seemingly suicidal breaks from alleged training and legality.

Trapped in a “stash house” awaiting violent retribution or relief, everybody has their moment to pause for a Big Speech and a baiting theory or accusation.

Those speeches play like “speeches” and lean on cliches. Some characters slip into caricature and violent moments and chases feel formulaic.

But Damon and Affleck bring conviction to their “brotherhood” and the sort of brother cop mistrust that sets off public servants who fear “snitches” more than any civilian on the streets.

“The Rip” remains perfectly watchable, if a tad slow, more than a little confused at times and utterly mired in a mess of its own making in that head-slapping finale.

Rating: TV-MA, graphic violence, profanity

Cast: Matt Damon, Ben Affleck, Catalina Sandino Moreno, Teyana Taylor, Steven Yeun, Sasha Calle, Lena Esco, Scott Adkins and Kyle Chandler.

Credits: Scripted and directed by Joe Carnahan. A Netflix release.

Running time: 1:58