Bale was a surprise inclusion ahead of Karim Benzema at the Santiago Bernabeu, where Real held a 3-0 advantage from the opening match in Turin.
Sergio Ramos’ suspension meant a call-up for 21-year-old Jesus Vallejo in central defence while left-back Marcelo assumed the captaincy.
For Juve, Medhi Benatia and Miralem Pjanic returned after they were banned for the first leg. Mario Mandzukic started on the left of an attacking trio, alongside Douglas Costa and Gonzalo Higuain.
Starting line-ups for the Champions League quarter-final, second leg between Real Madrid and Juventus at the Santiago Bernabeu on Wednesday (kick-off 1845 GMT; Real Madrid lead 3-0 from first leg):
Real Madrid (4-4-2)
Keylor Navas; Dani Carvajal, Raphael Varane, Jesus Vallejo, Marcelo (capt); Toni Kroos, Luka Modric, Casemiro, Isco; Gareth Bale, Cristiano Ronaldo
Coach: Zinedine Zidane (FRA)
Juventus (4-3-3)
Gianluigi Buffon (capt); Mattia De Sciglio, Giorgio Chiellini, Medhi Benatia, Alex Sandro; Miralem Pjanic, Sami Khedira, Blaise Matuidi; Douglas Costa, Mario Mandzukic, Gonzalo Higuain
Coach: Massimiliano Allegri (ITA)
Referee: Michael Oliver (ENG)
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