video1.0World’s First Quadruple Tail Whip on A Mountain Bike | The Audi Nines MTB 201826inhttps://i.ytimg.com/vi/qLRuYYQ3HSs/mqdefault.jpg15084]]>1557711771582018-09-13freeridemtbbmxmountain bikeslopestylebig airbikingnine knightsgermanyaudi ninesdavid godziekquad whip