Having finished second to Chaz Davies in Saturday's opener, Rea lined up in the middle of the third row on Sunday, one place behind Kawasaki teammate Tom Sykes, with Davies' Ducati teammate Marco Melandri starting from pole.

Melandri converted his starting position into an early lead, but Sykes shot up to second exiting the Andretti Hairpin for the first time and then slipped underneath Melandri at Turn 4 to grab the lead.

Rea meanwhile was making similarly swift progress, immediately climbing to fourth and then dispatching Xavi Fores and Melandri on the opening lap to make it a Kawasaki 1-2 out front.

But Sykes' lead proved short-lived as he fell prey to Rea on the third lap, again at Turn 4, and quickly fell behind the rapid Ulsterman.

Five laps later, the gap between the Kawasaki pair had grown to 1.4 seconds, by which time Davies had installed himself in third, helped by Melandri running off-track and dropping to ninth on the second lap.

Rea went on to win by 2.887s over Sykes, extending his championship advantage to 59 points with five rounds remaining of the season.

Davies held on to the final podium spot, closing in on but never challenging Sykes in the latter stages, while Melandri recovered from his early excursion to finish fourth ahead of the Barni Ducati of Fores.

Eugene Laverty led home a trio of Aprilias in sixth, the Milwaukee rider beating Ioda's Leandro Mercado and Lorenzo Savadori on the second SMR-run bike.

Yamaha pair Alex Lowes and Michael van der Mark completed the top 10, one place ahead of Honda's Stefan Bradl, while World Superbike rookie Jake Gagne once again scored points in 15th position.

Althea BMW suffered a dreadful race as Jordi Torres and Raffaele de Rosa both crashed out. Front row starter Leon Camier was another early casualty as his MV Agusta stopped on track.

Pos.	#	Rider	Bike	Gap
1	1	Jonathan Rea	Kawasaki	-
2	66	Tom Sykes	Kawasaki	2.887
3	7	Chaz Davies	Ducati	4.847
4	33	Marco Melandri	Ducati	17.159
5	12	Xavi Fores	Ducati	22.741
6	50	Eugene Laverty	Aprilia	26.377
7	36	Leandro Mercado	Aprilia	28.475
8	32	Lorenzo Savadori	Aprilia	29.718
9	22	Alex Lowes	Yamaha	33.044
10	60	Michael van der Mark	Yamaha	33.541
11	6	Stefan Bradl	Honda	36.756
12	40	Roman Ramos	Kawasaki	43.031
13	15	Alex de Angelis	Kawasaki	47.306
14	88	Randy Krummenacher	Kawasaki	50.488
15	45	Jake Gagne	Honda	51.093
16	96	Jakub Smrz	Yamaha	59.197
17	37	Ondrej Jezek	Kawasaki
Ret	86	Ayrton Badovini	Kawasaki
Ret	2	Leon Camier	MV Agusta
Ret	81	Jordi Torres	BMW
Ret	35	Raffaele De Rosa	BMW