Fullback Nehe Milner-Skudder (hamstring) and prop Loni Uhila (calf) were ruled unfit to travel, but coach Chris Boyd said neither injury was serious.
"If we had been playing at home they may have been considered, but to sit on a long haul flight with a muscle injury like that was probably not a great idea," he said. "It's a long season, so we decided the prudent move was to leave them at home and get them 100 percent right for our first home game against the Rebels in two weeks' time."
Boyd will name his match-day 23 to play the Sunwolves tomorrow (Thursday).
The Hurricanes' 25-man touring squad for Japan is: Ardie Savea, Beauden Barrett, Ben May, Blade Thomson, Brad Shields, Callum Gibbins, Chris Eves, Chris Smylie, Cory Jane, Dane Coles, James Blackwell, Jeffery Toomaga-Allen, Jordie Barrett, Julian Savea, James O'Reilly, Matt Proctor, Michael Fatialofa, Mike Kainga, Wes Goosen, Ngani Laumape, Otere Black, Reed Prinsep, Ricky Riccitelli, TJ Perenara, Vince Aso