Bury had not won away from home since October but were never in any danger after going two goals up after just 12 minutes at Victoria Park.
Flitcroft admitted: "The key was the preparation stage. The last 48 hours were key, with the boys buying into that side of things.
"After games we prepare well, we make sacrifices and if it means players missing their families for an extra hour or two, it's something they are prepared to do.
"Everyone is committed into what we are trying to do and buying into it. The result and performance backs it up."
After beating York on Sunday, this win cemented back-to-back victories for the Shakers for the first time since November 2012.
"It doesn't surprise me to be honest that it's been so long since this club won back-to-back games," reflected Flitcroft.
"There's been a lot of things wrong on the football field and it's my job now to put that right. This group of players has some quality in there, some experience and we will get the energy in there and get fitter as the season goes on, so we will improve.
"I'm looking forward to working with them.
"The clean sheet was something positive for me - to do anything in football and to win things, you need to keep clean sheets and have the players out there to do that.
"The work from front to back against a team who like to play football was brilliant."
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- the Shakers