Josh Sheehan's triple backflip changes the game in dirt bikingFreestyle motocross rider Josh Sheehan discusses his triple backflip and explains how he executed the stunt.SI Staff|Share on FacebookShare on XAdd us on Freestyle motocross rider Josh Sheehan discusses his triple backflip and explains how he executed the stunt.Published Nov 25, 2015 | Modified Nov 25, 2015SI STAFFShare on FacebookShare on XHome/Edge