The Nagasaki Blazer is a quad bike from Grand Theft Auto V and GTA Online that is due to appear in Grand Theft Auto VI, first spotted among a group of bikers riding through La Perle in the first trailer. Its bodywork echoes the 2012 Yamaha YFZ450, dressed with an aftermarket grab bar and uncovered sport handlebars.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.