Can anyone tell me what font is used in this art piece.

in my opinion looks like nike and all this kind of pieces, but try whit this tool http://www.myfonts.com/WhatTheFont/ I will hope that can help you,
cheers!
@miguelalonsov
This /R makes me thinking to Bebas. Starting from this one, it would be easy to reproduce it, "only" needs to recreate this handmade feeling by squooshing some letters (and may be adjusting /M bottom center part).
Captured from web.archive.org on 21 Jan 2013. view this capture