Marvin Stammel
Born and raised on the dirt grid, Casey Currie discovered his love behind the wheel of any off-road monster machine he could get his hands on as a young kid.
Flex, Rocks & Rollovers is an off-road media brand built on a lifelong obsession with exploring the trails less traveled. Founded by Marvin Stammel, the journey began in Germany, where early experiences off-roading sparked a passion that would eventually carry him across continents and into some of the most challenging terrain in the United States.
What started as a Facebook page in 2012 has grown into a full-scale off-road storytelling platform, producing popular series like 24 Hell and Back, Hell and Back Adventures, and Sh!tbox Adventures. Through trail rides, vehicle builds, and global travel, Flex, Rocks & Rollovers captures the experiences, friendships, and memories that define off-roading beyond the vehicles themselves.
Today, FRR reaches millions of enthusiasts worldwide through original content, recognizable builds, and a tight-knit community that values adventure over ego. Regular viewers will also recognize longtime friend and trail partner Will “Mr. Karnage” Avendaño, whose humor and personality have become a familiar part of many recent adventures. HP Tuners is proud to support Flex, Rocks & Rollovers as they continue to share the stories that connect off-roaders everywhere.
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