[gster335]

So i found a good deal on some good second hand 4 piston grey brembos(the unpainted m sport brakes)

I was wondering if i could retrofit these as the rear brakes and swap all drilled 340mm rotors?

technically it would fit but would the back mount properly or it would require lots of custom fab?

I was thinking of doing the 2 piston m perf brake upgrade but these are more expensive.

Those stock 1 pistons arent cutting it.

[brigade24]

aren't cutting it in what sense?

[blumagic]

No it won’t bolt on, the mounting points are way further apart. You would need to have an adapter fabricated but there are more factors than just the bolt spacing.

After that you would have to have to either find a rotor or have one custom made that is 340mm and spec’d for the rear hub size.

By that point you are probably beyond the cost of second hand 2 piston rears with off the shelf rotors.

[Gen13 F36]

Originally Posted by gster335

Those stock 1 pistons arent cutting it.

How so?

Time Attack?
Braking contest?

Please elaborate.