City took less than a quarter of an hour to do what no side have done in this season's competition as they breached SuperSport's rearguard for the first time through Aubrey Ngoma.
In the second period United hit back through Kingston Nkhatha but City restored their lead within two minutes through Judas Moseamedi to claim the trophy.
The opening stages of the game yielded no real clear-cut chances but it was a surprisingly open affair with both side's looking threatening going forward.
Having seen an earlier effort ballooned into the stands Ngoma was intent on making amends when he picked up the ball in the 13th minute before unleashing a low drive that arrowed past Reyaard Pieterse to give City the advantage.
Despite suspicion of a foul on Thuso Phala in the build up to the goal it was tremendously well worked and finished from outside of the area as City recorded their 11th in the tournament.
The intensity of the opening exchanges was sustained by both sides following the goal but as was the case early on there were few chances of real consequence barring a tame header from Matsi that was gobbled up by Pieterse.
Just before the half-hour mark Clayton Daniels played his side into trouble as his weak header back to Pieterse was pounced upon upon by Masina who went crashing into the stopper and caused a momentary stop to proceedings.
At the other end the long throws of Michael Boxall were proving difficult to deal with at times and Phala almost profited as the ball fell to him at the back post but he was under too much pressure to make the most of the chance.
Minutes from the break and there was a chance for Jayiya to increase the advantage but he steered his header wide of the upright.
Stuart Baxter's men had a penalty appeal waved away in stoppage time as a ball into the are grazed off of Daniels' head and struck the arm of Thamsanqa Mkhize as he rose to challenge the SuperSport centre-back.
Just moments into the second-half and City were looking threatening again but influential captain Lebogang Manyama chose the wrong option whilst well positioned in the box.
At the other end SuperSport's primary goal-threat Thabo Mnyamane engineered a cross-come-shot from a tight angle on the byline that forces Walters to tip over the cross bar.
On the back of that City mounted an attack on the goal of their opposition that had SuperSport scrambling before the assistant referee eventually bailed them out with the offside flag.
Eric Tinkler's men were not content to sit back on the lead they already had and two telling interventions from Pieterse made sure his side remained only one goal behind.
At the other end SuperSport had two chances in quick succession as Kingston Nkhataha had his effort from range touched being and Morgan Gould headed over from the resultant corner.
The equaliser was eventually forthcoming from a 71st minute corner as Gould got his head to it before a touch from Daniels presented the ball to Nkhatha at the far post to stab home.
However, SuperSport did not remain level for long as City hit back two minutes later with Ngoma turning provider for Moseamedi, fresh onto the field, to contort his body and loop a header past a diving Pieterse.
With time running out the trailing side endeavoured to rescue the game and it took a world class sliding intervention from Mkhize to deny Mnyamane a tap in at the back post.
At the other end Dean Furman made a similarly telling intervention to turn Manyama's low cross past the post and keep his side in it but despite late pressure they could not equalise as City claimed a first ever title in their maiden season.