They remain the only Championship side to have defeated a Super League opponent in the Qualifiers so far having beaten Salford 41-10 three weeks ago.
However, they fell away badly versus top-flight Widnes Vikings on Sunday and were also vanquished at Wakefield Trinty Wildcats earlier in the competition.
Bradford head to Challenge Cup finalists Hull KR tomorrow looking for a second scalp to boost their promotion drive.
“You’ve got to be confident,” said Lowes, who last night revealed he had given a new one-year deal to winger Omari Caro, discarded by KR last season.
“We were confident of beating Wakefield and beating Widnes, but it’s all about how the game pans out in the end.
“We played particularly well to beat Salford and our focus was 100 per cent throughout the game. That made a big difference and we’ve challenged ourselves to do that this week because we want to go there and be really competitive against Hull Kingston Rovers.”
Bradford know three straight wins against Hull KR, at Leigh and at home to Halifax would secure them a passage straight back to the elite. But Lowes admitted: “First and foremost we’ve got Hull KR and I’m worrying about that more than anything.
“We’re going to go out there and try and win the game.
“Hull KR got to Wembley, so they can’t be a bad side and they can play rugby.
“They’re a dangerous side and haven’t lost yet in the Qualifiers.
“They didn’t have a particularly good Wembley, but I suppose nerves can play a lot in that as well.”
Lowes is again without Lee Gaskell, their influential stand-off who is still troubled by an injury suffered at Wakefield four weeks ago. He said: “I don’t know with Lee; it’s a time issue really about how quickly this bruising on his kidneys can settle down. Unfortunately that’s not happening.”
He has dropped full-back James Clare for tomorrow’s game and recalled club captain Chev Walker to the 19-man squad.
On Caro, the 24-year-old who has scored five tries in six games since signing on a short-term deal in July, Lowes added: “Omari’s new contract is just reward for several weeks of hard endeavour and the fact he has come in and scored tries, which is what we wanted him to do.
“He came here on a short-term basis but has worked well to earn a new contract, in the days running up to a game I know he is looking forward to (the game).”
The coach also paid tribute to Jack Bates, the club’s former chairman who died aged 94 on Sunday and was involved when Lowes signed as a player in 1996.
“I didn’t know him particularly well, but knew him because he spent a lot of time at Bradford and had a presence at the club,” he said.
“He was a decent bloke and always took the time out to speak to you. It’s always sad when someone so strongly linked with the club passes away.”