The international winger had been sidelined with a foot injury
Andrew Trimble returns to Ulster's starting fifteen to travel to play Leinster in the Pro12 tomorrow.
The international winger had been sidelined with a foot injury.
Paul Marshall, Darren Cave and Tommy Bowe will also start in the backs, with Rob Herring, Franco van der Merwe and Sean Reidy coming into the pack.
Herring will captain from hooker, and says he hopes he can lead from the front.
Kick-off at the RDS is at three o'clock.
Ulster team to play Leinster at RDS Sat 3pm
(15-9): C Piutau, A Trimble, D Cave, S McCloskey, T Bowe, R Pienaar, P Marshall
(1-8) A Warwick, R Herring (c), R Ah You, K Treadwell, F van der Merwe, C Ross, S Reidy, R Wilson
(Replacements 16-23) J Andrew, C Black, J Simpson, P Browne, C Henry, B Herron, L Ludik, J Stockdale