Irish sprinter Sam Bennett of the Bora-Hansgrohe team said he was ready to fight for the Milan-San Remo classic title, after digging deep to clinch a narrow stage-six victory at Paris-Nice on Friday, his second win on the eight-day cycling race.

Team Sky's Michal Kwiatkowski kept hold of the yellow jersey ahead of Saturday's potentially decisive mountain stage at the Col du Turini in the hills near Nice.

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Bennett looked to have left it too late in a reduced group who finished ahead of the peloton as French sprinter Arnaud Demare made the early run for the line.

But Bennett unleashed an impressive last-100m dash to pip him at the line with Italy's Matteo Trentin a close third.

The 28-year-old Belgium-born Irishman also won Tuesday's racing after making a name for himself last season with three stage wins on the Giro D'Italia.

Both Bennett and Demare said the stage was promising preparation for the 291km 'Primavera' which starts on Saturday March 23.

"This race was my first goal, then Milan-San Remo, then I will back up a little and try to refresh the head," said Bennett.

"But Milan-San Remo is all I'm thinking about right now."

"Sagan will be there at Milan but I'm not going to tell you what our tactics are," he said of his relationship with team leader Peter Sagan, an all-rounder and multiple world champion.

"When you have the confidence, everything is flowing. For a sprinter, when he's winning, everything is going so smooth. You don't have to fight for it, it's just happening."

The beaten Frenchman Demare, who won Milan-San Remo in 2016, said he felt he was weakened by the headwind.

"I'm really disappointed, I saw myself raising my arms in victory, but to win you need that certain something and at Paris-Nice I haven't had it. But physically I'm peaking and this is good for Milan," he said.

Saturday's penultimate day of racing embarks from the coastal city of Nice and ends atop the Col de Turini after a near 15km climb at 7.3-percent gradient in the foothills that climb into the Alps.

Team Sky are in pole position to win the tour with Kwiatkowski leading and their Colombian prodigy Egan Bernal just 18 seconds adrift, with other potential winners in Nairo Quintana and Romain Bardet needing to take at least a minute off them on the final climb.