Peacehaven completed a league and cup double when they beat Bognor 3-0 to lift the Sussex Senior Cup at the Amex.
Goals from Tom Lawley, Tom Burton and Josh Jones handed the Magpies the trophy for the first time in their history in front of a crowd of 2,003.
It completed a memorable season for the club as they were crowed Ryman south division champions in their first ever season at that level.
Peacehaven made a fast start with chances inside the first three minutes for both Josh Jones and Burton.
Bognor had an opportunity on 11 minutes when Jon Marzetti’s loose clearance was pounced on by Ollie Pearce who advanced before shooting inches past the far post.
That signalled a period of Bognor period when the quality of their football had Peacehaven on the ropes.
They created a number of chances, the pick of them when Sammy Igoe touched on a quickly-taken Kane Wills free-kick for Terry Dodd whose shot beat Tony Di Bernardo but hit the inside of one post, then the other before being cleared.
Having survived those threats, Peacehaven took the lead on 34 minutes when Lawley seized on the ball and drove low past Anthony Ender inside the near post.
Doug Tuck spurned a great chance to level for Bognor on 56 minutes when he dragged a shot wastefully wide from a corner.
Lawley responded five minutes later with a stinging shot from 20 yards which was tipped over the bar by Ender for a corner from which Peacehaven doubled their advantage.
Josh Jones delivered from the right, the ball was flicked on at the near post and Tom Burton headed home at the far post.
Bognor kept battling and Pearce had a shot superbly beaten away by Di Bernardo with 15 minutes remaining.
But Peacehaven had the last word deep into stoppage time when Josh Jones burst into the penalty area and slid a shot past Ender at his near post.