Jonathan Rea says he is renergised ahead of the final stretch of the season charge after the summer break and has set his goals solely on extending his World Superbike championship lead.

The final round before the extended summer break at Laguna Seca ended on a bad note for the defending champion when he was forced to retire from race two with a technical issue.

The DNF marked his first non-finish of 2016 and with Kawasaki team-mate Tom Sykes winning the race in America the points deficit has closed to 46 points.

Approaching the first round of the final stint of the season Rea is heading into the relative unknown at the Lausitzring having never competed at the German circuit in his career.

"I rode at the Lausitzring recently on my own road bike Ninja ZX-10R," Ra said. "It was good to get some track time at a new track to me. Our rivals had tested there so it was important. It has been such a long summer break.

"For a few weeks at the start I enjoyed just being at home and after that I knuckled down to be in ideal condition for the last few races. I really put some effort in at the gym, riding motocross and my bicycle. The last four rounds are an important time and they come along in quick succession. It is important to be razor sharp to give myself the best possible chance through to the end of the year.

After his retirement at Laguna Seca ended his three-race winning streak Rea is targeting a return to the rostrum, having finish on the podium in every race he has seen the chequered flag in 2016, to rebuild his series advantage.

"My focus now is to increase the championship lead," he said. "Personally, I am looking at the last four races as one block because it is going to go by so fast."