Killimordaly possessed too much scoring craft for a gallant Four Roads side in testing conditions at Athleague.
The Roscommon champions produced a commendable effort but the favourites found scores much easier to come by.
Niall Earls' accuracy from frees proved crucial in the opening half as Killimordaly established a 0-8 to 0-6 interval advantage.
Keith Kennedy and Declan Connolly were prominent for the Galway champions as Eanna Ryan, Andrew Daly, Connolly and Conor Daly also found the target.
Four Roads lacked a physical presence in attack and had to rely on the free-taking exploits of Shane Curley and Enda Rogerson for their scores.
Killimordaly upped the ante after the break and four points from Paul Madden from play confirmed his side as provincial kingpins.
SCORERS – Killimordaly: N Earls 0-6 (3f), P Madden 0-4, E Ryan 0-2, A Daly, D Connolly, C Daly, J McDonagh 0-1 each. Four Roads: E Rogerson (2f) 0-3, S Curley (2f), P Kelly 0-2 each, J Lawlor, J Coyne, M Kelly (f) 0-1 each.
KILLIMORDALY – P Kilkenny; C McDonagh, P Monaghan, A Lawless; P Concannon, K Kennedy, D Concannon; C Daly, T Madden; P Madden, D Connolly, E Ryan; N Earls, J McDonagh, A Daly. Subs: N Daly for Monaghan (40), S Concannon for Daly (45), C Earls for McDonagh (55).
FOUR ROADS – D Dowd; S Curley, C Dowd, B Donnelly; J Moran, P Kelly, J Rogerson; M Kelly, J Lawlor; E Mulry, C Dolan, D Dolan; E Rogerson, J Coyne, R Kelly. Subs: D Fallon for Lawlor (43), C Mulry for R Kelly (56).
REF – S Hourigan (Limerick).