Kimmich netted twice while Lewandowski poached a second-half goal to claim another league record as Sane, Gnabry and Choupo-Moting all scored for Bayern
Champions Bayern Munich fired four first-half goals past promoted VfL Bochum and went on to thrash the visitors 7-0 Saturday as they took over top spot in the Bundesliga.
The Bavarians, who lead on 13 points from five games a point ahead of VfL Wolfsburg who play Sunday, killed off the game in the first half and never took their foot off the gas.
They opened their account with their first shot on goal when Leroy Sane curled a free kick over the wall in the 17th minute.
He then set up Joshua Kimmich for their second goal 10 minutes later with the midfielder latching onto Sane's clever cross into the box before turning on the spot and firing in.
Bayern made it 3-0 in the 33rd with Serge Gnabry charging through to score and Bochum's first half misery was complete when Vasillis Lampropoulos scored an own goal as he attempted to pass the ball in front of Bayern striker Robert Lewandowski.
The Pole did get on the scoresheet in the 61st, tapping in from close range and becoming the first Bundesliga player to score in 13 consecutive home games.
Lewandowski, who set a Bundesliga record with 41 league goals last season, has already scored seven times in Bayern's first five league games so far this term.
With the home fans conducting Mexican waves in the stands, Bayern kept up the pressure, adding a sixth through Kimmich in the 65th before substitute Eric Maxim Choupo-Moting drilled in number seven in the 79th to complete Bochum's misery.