O'Mahony is recovering from double shoulder re-construction and could only watch from the sidelines as the men in red were pipped by Glasgow Warriors in last season's play-off semi-finals.
The Irish province have recruited well over the summer however with Australian centre Andrew Smith and Kiwi playmaker Tyler Bleyendaal the marquee arrivals.
And with their season kicking off on Friday against Edinburgh in Limerick, O'Mahony is keen to hit the ground running in the new campaign.
"I think the most important thing for us this year is consistency, I think we have had a couple of great performances last year backed up by a few very poor performances which a few years ago wouldn't have been the case," he said.
"The thing that will always been the measure of us is silverware and I think it is about getting that consistency
back to put us in a better position at the end of the season.
"I think the signings have been a great addition as well, Andrew Smith just arrived from Australia and Robin Copeland and Martin Kelly have come in from Leinster and have all made a great impact."
O'Mahony himself is still more than a month away from making his return but the Ireland flanker is confident that he will be as good as new when he pulls on the famous red shirt again.
"It has been a really good pre-season and really enjoyable from my point of view, just getting back in with the squad was great as for the first couple of weeks I was training on my own," he added.
"I have another six weeks to go before I am fully fit but certainly from five months ago when I was in a double sling most of the hard work has been done so I am looking forward to getting back playing."
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