Aaron Hayden’s first-half header secured victory against a resilient Maidenhead side, making it ten straight wins at the Racecourse.
Hayden put Wrexham into the ascendancy as his header sailed past Alexis Andre Jr, leaving him with no chance of saving.
Paul Mullin could have doubled the lead in the final ten minutes of the match from the spot, but he fired wide.
Despite relentless Wrexham pressure, Andre Jr kept the Magpies in the game right until the full-time whistle, with a superb performance in between the sticks.
Wrexham move one point behind league leaders Notts County, as they finished one goal a piece with Bromley.
Phil Parkinson named two changes to the eleven that beat Altrincham convincingly at the weekend.
Bryce Hosannah came back into the starting lineup along with Elliot Lee, replacing Callum McFadzean and Jordan Davies.
In a different type of contest to that of Altrincham, Wrexham dominated proceedings from the kick-off, looking to break between the lines of a regimented Magpies' defence.
The first chance of the evening fell to Mullin, as he linked up with Hosannah down the left-hand side, before firing into the side netting.
Ben Tozer looked like he’d broken the deadlock after he poked the ball goalbound, but somehow Andre Jr clawed it away.
However, on the half-hour mark, Hayden put Wrexham into the lead with a leaping header, scoring his eighth of the season.
Moments after The Red Dragons took the lead, Ben Tozer was forced off the pitch for an extended period of treatment after a clash of heads left the centre-back bloodied.
The visitors struggled to create any chances of note during the first half, but Charlee Adams looked to turn things up a notch in the second, as his volley flashed narrowly wide of Howard’s post.
It should have been two for Wrexham and two for Hayden ten minutes into the half, as his flicked effort was saved, and he knee’d the rebound onto the roof of the net.
Chances came again for Parkinson’s men, as Tozer’s deflected was saved well by Andre Jr’s feet, and he palmed away the rebound resulting in an unfortunate clash of heads with Palmer.
Mullin should have sealed the victory, as he was bundled down in the area, but fired the penalty wide of the post.
James Jones had a gilt-edged opportunity to double the lead just as the 90 minutes were up, but Andre Jr stood firm to deny the midfielder.
Andre Jr’s inspired form continued as he somehow managed to tip Jordan Davies’ thunderous strike around the post.
Wrexham AFC: Howard, Forde, Hayden, Tozer, Tunnicliffe (O’Connor 71’), Hosannah ( McAlinden 90’) , Young ©, Jones, Lee (Davies 85’) , Palmer, Mullin
Subs not used: Watson and Dalby
Maidenhead United: Andre Jr, Asare (Sparkes 78’), De Havilland, Kpewka, Clerima, Barrat, Clifton, Arthur (Smith 66’), Upward ( Ferdinand 36’), Massey ©, Adams
Subs not used: Beckwith and Nathaniel-George