All Things Mk5 > Performance Modifications

Porsche 6pot Upgrade > Mk5 GTI

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rich83:
Probably to do with piston sizes.

Bare in mind the 6pots are twice as heavy as the ttrs/db9 caliper.  :innocent:

Tfsi_Mike:

The greater surface area of the big cayenne calipers don't make for a good pedal feel / response.  Don't think our master cylinders are matched well with them. 

rich83:
As I suspected.... there are a few variations...

Brembo 6 pot 17Z - pistons 34/36/38 = ~ 6000mm2
Brembo 6 pot 18Z - pistons 30/34/38 = ~ 5500mm2
Brembo 6 pot 19Z - pistons 32/36/38 = ~ 5900mm2


vs the ~5550mm2 of the TTRS/DB9.... so id say you need to 18Z caliper and avoid the other 2 version.

a8rnx:

--- Quote from: richwig83 on August 28, 2014, 10:24:27 pm ---As I suspected.... there are a few variations...

Brembo 6 pot 17Z - pistons 34/36/38 = ~ 6000mm2
Brembo 6 pot 18Z - pistons 30/34/38 = ~ 5500mm2
Brembo 6 pot 19Z - pistons 32/36/38 = ~ 5900mm2


vs the ~5550mm2 of the TTRS/DB9.... so id say you need to 18Z caliper and avoid the other 2 version.

--- End quote ---

That's the one I was going to go for mate, the 18z calipers but not sure with above comments from mike :)

rich83:
Depends what you want out of them I suppose. If you want them for show then crack on.... if you want some really really good brakes that will stop you ever time then there are probably better solutions.... depends on your budget.

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