Beginning in 2018, No Prep Kings became a spin-off series of the Street Outlaws franchise, moving the racing from public streets to a drag strip where the track surface is not specially prepared beforehand, unlike most drag racing events.

Racer Ryan Martin won the No Prep Kings championship three times, in 2019 (Season 3), 2021 (Season 4), and 2022 (Season 5), using a powertrain combining a ProLine Hemi engine with a ProCharger F-4X supercharger in 2021 and 2022.

During filming of the fourth season of the spin-off Street Outlaws: Fastest in America on August 7-8, 2022, driver Ryan Fellows' gold Nissan S30 (sold in the US as a Datsun 240Z) crashed, rolled over and caught fire near the Harry Allen Generating Station in Las Vegas, killing him.

According to a Sinclair News affiliate report, producers Warner Bros. Discovery and Pilgrim Media Group had not obtained an authorized film permit for the fatal Las Vegas shoot, though they did hold a Nevada Department of Transportation permit to close the street for filming.

The fatal 2022 crash reignited a controversy dating back to 2015, when the National Hot Rod Association (NHRA) threatened to revoke the racing licenses of any competitors who participated in Street Outlaws, citing the lack of crash walls, catch fencing, and proper safety crews on the show's street-filmed races compared to NHRA's closed-circuit events.

The franchise spawned two video games: Street Outlaws: The List (2019), developed by Team6 Game Studios and published by GameMill Entertainment/Maximum Games, and its sequel Street Outlaws 2: Winner Takes All (2021).

Street Outlaws: The List received a poor review from Switch Player, which gave it 2 out of 5 stars, criticizing the racing as boring and the vehicle upgrade system as overly complex for non-enthusiasts.