Racing-Métro added to last week's win at Castres with an 18-12 success over Brive at Stade Amédée-Domenech.
It wasn't a high-scoring affair but Racing got the job done ahead of their Heineken Cup opener at home to Cardiff Blues, which is set for next Friday.
Gaëtan Germain kicked 12 points for the visitors while star Jonathan Wisniewski added another penalty to Mathieu Lorée's 52 minute drop-goal with just seconds remaining in the meeting.
However, Julien Caminati was shrewd enough to cancel out Wisniewski's three points to salvage a bonus point for Brive, which moves them above Perpignan and into ninth position in the table.
Pen: Belie 2, Caminati 2
Pen: Germain 4, Wisniewski