Towcestrians are up to second in South West One East after thrashing fifth-placed Maidenhead in their rearranged match on Saturday.
After the original fixture was called off, Towcester and Maidenhead finally played at Greens North Road with the home side roaring away with victory to go above Windsor on points difference.
Tows started well with Martyn Harvey scampering across and touching down for an early try, despite having to play out of position, before the hosts moved the ball swiftly to find Adam Wilkinson who finished in the other corner for a second try that was impressively converted by Matt Yuill.
Tows now had the upper hand and their domination in the scrums led to two further tries, the first through Chrissie George before Dave Stocks crossed the whitewash. Yuill converted both to put his side firmly in the driving seat with a 26-0 half-time lead.
The visitors, now with the wind behind their backs, scored a consolation try shortly into the second half, but that was quickly cancelled out as Tows came straight back and second row Chris Kirby charged for the line before off-loading to Yuill in support to touch down.
Tows saved the best till last with a well-worked try, sucking players in through the forwards then releasing the backs and fly half Charlie Barker to touch down under the posts and complete a pivotal win in the promotion race.
Elsewhere, Tows IIs lost by a single point at Daventry while Towcester Colts beat Mens Own 29-7.