title: Helicopter chases Curtis Keene down incredible MTB trail - Heli POV, channel: Red Bull sidewall,curtis keene,motorcycle,winter sports,downhill,skiing,twin,red,bmw,powder,mountain bike (sports equipment),downhill mountain biking (sport),pov,airplane,ski,bicycle and motorcycle geometry,motocross,dirt,helicopter,heli,jet,switch,crud,rails,motor,mountain,bicycle,enduro,biking,redbull,cross,bull,jump,trail,santa monica,la,riding,mountain biking,soft,ktm,supercross,ride,groomers,tourist destination,red bull,top bike,bmx,mtb,race,cycling,mountain biking (sport),bike sports