The Yamaha XJ6 is a middleweight naked bike popular in Brazil, where 'estourado' describes an exhaust modified to be extremely loud. Short clips of these blown exhausts circulate widely in rider groups on WhatsApp, TikTok and YouTube, shared as flexes, exhaust comparisons and reactions to noise. This particular recording follows that pattern: a single long rev session with no talking, built to show off the volume. Sounds like this stay popular because the raw engine noise needs no translation.