Linked with a move to Paris Saint-Germain, Neymar only needed 45 minutes at MetLife Stadium to once again show what he is capable of.
The Brazil international scored a first-half brace, a neat finish followed by a spectacular individual goal in New Jersey.
Neymar dribbled past five Juve markers before finishing for his second goal as Barca dominated in Ernesto Valverde’s first game in charge.
Lionel Messi was also typically impressive, but he had to play second fiddle to Neymar before Barca played a different XI in the second half.
Juve were much-improved after the break and managed to pull a goal back through Giorgio Chiellini.