In 2008, the band signed to Universal Republic. After releasing the singles "Death for All But Metal" and "Community Property," Steel Panther's full-length Feel the Steel was released in October of 2009. The album broke the band onto the Billboard chart, netting them a spot at number 98 on the U.S. charts (and 48 on the rock chart). Not wanting the fun to stop, the band got back to it quickly and in 2011 followed up with Balls Out, which featured guest appearances from comedian Dane Cook and Nickelback's Chad Kroeger, among others. 2014's All You Can Eat featured the single "Party Like Tomorrow Is the End of the World," and featured cover art parodying Leonardo da Vinci's Last Supper. In 2016, the band issued their first concert LP, Live from Lexxi's Mom's Garage, which was released in conjunction with their first full-length feature film, which blended comedic vignettes and other assorted antics with the aforementioned glam-folk garage show.
At the end of 2016, Steel Panther released a cover of Cheap Trick's "She's Tight" in advance of their fourth studio album Lower the Bar, which arrived in March 2017. The group headed out on tour in support of the album, playing dates across the world before embarking on their Sunset Strip Live tour, which saw the band playing a mix of original material and classic metal covers. Tapping producer Jay Ashton for their fifth album, the band dropped the unabashed Heavy Metal Rules in late 2019, preceded by the single "All I Wanna Do Is Fuck (Myself Tonight)." ~ Jason Lymangrover, Rovi