The match-winning goal was scored by winger Daniel Burke when he fired home from a pass by man of the match Barry Coffey with seconds to go before a penalty shoot-out.
Nenagh led twice and Wilton fought back to parity twice at 2-2 to force extra time but it was Tipperary’s Nenagh, who play in the Limerick District League ,who lifted the trophy in a dramatic finish to a game of average quality despite the five goals.
Jake Morris gave Nenagh a 36th minute lead from the spot after Coffey was fouled in the box and they held this advantage to the break.
Wilton made it 1-1 when Lee Cooke scored after keeper Callan Scully had parried a shot by Jordan Murphy just four minutes into the second half.
It was 2-1 to Nenagh three minutes later in the 52nd minute when Barry Coffey netted with a right-footed finish across the keeper Michael Oakes into the far corner.
Wilton fought back a second time to make it 2-2 after 78 minutes when right-back Robert Wyse equaliser shooting low into the far corner past Scully before we had that dramatic climax to the tie and Burke’s match winner at the death.
Nenagh: Callan Scully; Keith Ryan, Eoin Coffey, Jack Dunne, Conor McCarthy; Daniel Burke, Dylan Sheehan, Oisin O’Sullivan, Casey Finn (Morris 29); Bryan McLoughney (O’Brien 81), Barry Coffey.
Wilton United: Michael Oakes; Robert Wyse, Tomas Sheehan, Colm O’Driscoll, Killian Murray; James O’Sullivan, John Weir (Grace 66), Peter O’Driscoll, Karl Walsh (R. Byrne 56); Lee Cooke (Henry (extra-time), Jordan Murphy.
Referee: Michael Rock (Clare).