Ordered by mistake, I only have the 2 pot ....whooah wait...actually it's ONE pot per side brakes. 

Your car is better and has 4 pots or slave cylinders per caliper / side. 

I ship well packed same day as payment.

I have the brake pads also, will list separately. I always buy OEM, they are less likely to warp and a lot of these drilled discs are actually weak, it's a gimmick unless you spend a fortune.

Not sure if for G37 or not.