They fought back on a couple of occasions but never got within five as Sydney (8-5) played with impressive composure down the stretch.
Ben Madgen, who poured in 30 points in Sydney's round-five loss to the Breakers, recovered from a dislocated shoulder to start but it was Corin Henry who did most of the damage.
The American guard scored 29 points and outshone Cedric Jackson who, coming off a triple-double which earned him player of the week honours, never threatened to replicate last week's output.
The two sides came into the game ranked in the top two in scoring, but only Sydney demonstrated their pedigree as the Breakers took more than two minutes to get off the mark.
As the Breakers' shooting reverted back to early-season form, the Kings continued to build on their advantage and held a 24-11 lead at the first break.
The Breakers didn't manage many defensive stops in the first quarter but they stepped up their intensity in the second. There were few improvements in their shooting, though, as the Kings' lead grew to 16.
But a couple of three-pointers from CJ Bruton, one from well beyond the arc, reduced the deficit to single figures and saw Sydney take 39-31 lead into halftime.
The break appeared to squash the Breakers' momentum, and they began the second half as flat as they started the first. The Kings came out with a 12-3 run to extend their advantage to a game-high 17 points and, for the first time, worry would have crept into Andrej Lemanis' huddle.
Like he did in the second quarter Bruton brought the Breakers back into the contest, and his third three capped a 10-0 run to see the visitors pull within five heading into the final quarter.
But the Breakers' attempted comeback was again halted as Sydney streaked away and closed out the contest with ease.
Sydney 75 (Henry 29, Madgen 13, Crosswhite 12)
Breakers 62 (Bruton 18, Webster 11, Jackson 9)
HT: 39-31
