'Absolute bummer': What brought Allen's brilliant Sydney charge undone

A steering failure was behind Kai Allen's heartbreaker in Sydney, with the Penrite Racing driver devastated by a mistake that gifted eventual winner Broc Feeney the lead.

Allen rounded up Feeney with a spectacular pass after the mid-race Shannons Safety Car restart on Sunday, before bowling a wide at Turn 8 to hand the lead back.

It came after Allen challenged pole man Feeney off the line and through Turn 1, setting up a race long battle between the two young guns.

Feeney seemed to have enough to keep Feeney behind, before disaster struck: in the closing laps, Allen limped his #26 Penrite Ford home.

"It's a bit of a shame, but I was walking back from the podium celebrating Matty's podium and I found this little thing laying on the ground," Allen said as he held up the failed steering component to broadcast cameras.

"It's pretty funny how I can put them together and probably put them in a box and keep it as a bit of a memory for what could've been, but honestly the guys did such a good job, ran a faultless race.

"The car was super fast, and I loved my mover around the outside of Broc, I thought I had him but I made a mistake into Turn 8 which I'll never forget until the day I die.

"I could've had him, but at the same time Broc ran a faultless race. The boys did a great job, just an absolute bummer for the team, but we'll get around each other, we'll fight hard, and at the end of the day Matty still got a podium.

"It is what it is, we'll regroup and go again."

Feeney and Allen bumped wheels on lap 1 and on the restart, but when asked if it caused the failure, Allen replied: "Well I don't really know, the boys were saying it could've been a bit of contact, but at the end of the day, even if I had too big a contact with Broc, it was just a stress part, just a fluke.

"Something cracked, it stressed a bit and it broke, so that's racing unfortunately, you can't control that, so we'll regroup and go again."

Where a win was there for the taking, Feeney instead heads to Melbourne 13th in points.

However, the 20-year-old was delighted to put on a show with one of the championship's leading drivers, in some of the most treacherous conditions possible.

"It was really cool, I had a great restart and put a lot of pressure on Broc, and I had a good run on him and knew he would block the inside," Allen said.

"Because it was drizzling, I knew that the race line at Turn 1 was going to be very slippery because of last year when it rained in the same scenario, so I just tightened the seatbelts.

"I was pretty comfortable, I knew I had it when I had a good run on him, bombed it into Turn 1, and just judged the gap and got on the grippy stuff right around the outside of him.

"Credit to him, he could've just been an absolute dog and just pushed me straight off the track, but Broc being Broc, great hard racer.

"We were just having good racing, but putting on a good spectacle for the fans as well, so bloody cool."

Supercars resumes in Melbourne in two weeks' time.