Real Salt Lake have beaten Portland Timbers 1-0 at Jeld-Went Field to confirm a 5-2 aggregate victory in the MLS Western Conference playoff final.

Jason Kreis will now lead his team into the MLS Cup final against Sporting Kansas City on December 7 looking for their second championship title in four years.

A 4-2 triumph at Rio Tinto earlier in the month did most of the damage, although Frederic Piquionne's late goal had given Caleb Porter's men hope of turning the tie around.

However, Robbie Findley scored the only goal of the second leg just before the half-hour mark, rolling into an empty net after Donovan Ricketts has spilled Javier Morales's tame shot into his path.

That took the sting out of the game for the visitors, as the Timbers tried to build a head of steam but never really got going.

The fruits of their labour is the title of Eastern Conference champions in the regular season, although their wait for an MLS Cup will go into a fifth year following their inception.