Kenny Pogue’s winner 12 minutes from time clinched the points in a lively Southern Counties East Football League Premier Division contest at Eden Park Avenue.
Two up inside the opening 25 minutes, Oaks surrendered the lead, before Pogue’s close-range header settled things.
Brett Ince’s deflected 30-yard strike and Stefan Wright’s own goal gave the visitors a perfect start, before Billy Bennett’s header into his own net gifted Beckenham a way back before half-time. Skipper Wright’s run and finish levelled things up midway through the second half, setting up a tense finish, before Pogue ensured leaders Oaks prevailed to move 10 points clear at the top of the table.
They bounced back quickly from defeat at Whitstable against their third placed hosts to clinch their eighth away win of the season.
Former striker Ince, now employed as a midfield playmaker put Oaks ahead, his low long-range strike taking a deflection to beat the diving Tyler McCarthy.
The keeper was then booked for racing out of his area to take out Bennett, before being beaten again, when Wright and defender Adam Wadmore got in a mix-up trying to clear Harrison Carnegie’s looping cross.
Becks pulled one back six minutes later with Bennett’s own-goal, before home top scorer Richard Atkins twice went close before half-time.
Oaks keeper Jack Bradshaw tipped Adam Allen’s strike for a corner two minutes after the restart as the home side started strongly. Ince’s free kick was pushed away by McCarthy at his near post, before Bennett just missed out getting on the end of Carnegie’s cross at the far post.
Wright made it 2-2 after 66 minutes with a good finish, before Atkins saw his right foot effort deflected for a corner.
Carnegie then created two more chances in the space of a minute, first seeing his low cross grabbed low down by McCarthy, before providing the perfect set-up for Pogue to head in the winner - his tenth in as many games.
The striker had continued following a nasty clash of heads late in the first half, while Byron Walker carried on after suffering a painful blow on the left arm early on, before being replaced by Josh Froggatt in the second half.