Maddison's sponsors include Red Bull, Skullcandy, Swatch, Dunlop Sport, DC Shoe Company, Arnette, KMC, KTM, mophie, Parts Unlimited, Crusty.com, Stomp grip, Cernics, FMF Racing, VP racing fuels, Amerigas, Acerbis, Works Connection, Hammerhead, and Pro Taper.