Tries in either half from Shane Jennings and Zane Kirchner saw Matt O'Connor's side run out 21-11 winners against Connacht at the RDS.
Winger Michael Allen and loosehead prop, Andrew Warwick come into the Ulster side that takes on the Ospreys at the Liberty Stadium later.
Leaders Munster is also away from home today – a much-changed side have travelled to Glasgow to take on the Warriors with kick off at 2.40.
Despite epic back-to-back battles with Clermont in the Champions Cup, winger Andrew Conway says there's no chance of the squad treating today's game a lesser challenge.
