Andy Molsom claimed two podiums in rounds 11 and 12 of the Caterham Graduates Championship at Oulton Park in Cheshire - leaving him joint top of the standings.
Qualifying for Molsom went well with two third-place starts.
Saturday’s first race saw a good start for Molsom, maintaining third place.
Championship contender Toby Briant had gear selection problems on lap two, which dropped him down the order.
This left Ed Benson and Molsom to fight it out for the lead, Benson crossing the line first by just 0.6 secs, despite numerous changes to the lead.
The second race saw Benson, Briant and Molsom three abreast around the first corner, followed by a three-way battle for the entire race.
Despite all drivers taking the lead of the race, again Benson was victorious, Molsom finishing third.
“Oulton Park is a fantastic little park circuit, it was only my second visit, and it took a few laps to get to grips with the fast corners on Friday testing,” the Kirton driver said.
“I seemed to have sorted it for the races.
Two more podiums for Molsom make it 11 podiums out of 12 races this year, and the championship looks as though it will go down to the last race in Spa-Francorchamps in Belgium.
Molsom added: “It was a good solid weekend, to be fighting for the lead, after a difficult testing day was great.
“The racing is getting very close, with the three clear contenders for the championship.
“To be in contention, I have to concentrate on race wins for the final four races of the year.”
Molsom leaves Oulton Park still at the top of the championship, tying with Briant the defending champion.
The next meeting is at Anglesey, North Wales, in early September.