Dave Grohl's new chair is ridiculously awesome

Dave Grohl performs with the Foo Fighters at RFK Stadium in Washington. Photo/AP

He may have broken his leg - but that isn't stopping Dave Grohl from rocking out as hard as he can.

The Foo Fighters front man has performed at a Fourth of July concert in Washington - the first time he's been on stage since he broke his right leg while performing in Sweden.

Grohl used the event to debut his new chair, and it has to be seen to be believed.

Dave Grohl shows off his custom-built chair in Washington. Photo/AP

With its leather seats, rim of spotlights and multiple guitar stands, Grohl's custom-built chair resembles a rock star's version of The Iron Throne from Game of Thrones.

That wasn't all - NME.com reports Grohl was joined on stage by his mother during For All the Cows.

The Foos played many of their biggest hits including Monkey Wrench, Learn to Fly, Breakout and Everlong, as well as a cover of David Bowie's Under Pressure.

Grohl rocked out the entire time, with his broken leg out in front of him on a stationary stand.

The festival also included sets by Gary Clark Jr, LL Cool J and Joan Jett.

- nzherald.co.nz