All Things Mk5 > Performance Modifications

TT-RS/Golf R master cylinder

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DFish:
Pagid 421's. Nice from cold and work well around Donington Park. :)

Fish

jimk04:
Hey Bruce you dont need to keep quoting those figures on all your posts! :wink:

DaveB@Vagbremtechnic:
Errr...just for the record the TTRS MC is quite different from the Mk5 GTI

To think its like for like just bigger would be a mistake.

Also Golf R gets the 23.8MC and 57mm pistons

the bruce:
Right, just measure one side of a fixed caliper when you compare it to a sliding caliper.

I will remove the ''on the edge'' remark on the next addition. Of course it does make a difference
if the MC is 22.2 mm or 23.8 mm and if stock calipers are 54 or 57 mm with ABS software and
booster matched to this.

There are two basic points (and that's not all):

1. Hydraulic adaption - that's what we already talk about. Influences both brake distribution and
pedal effort + travel.

2. Keep in mind most BBKs also provide a larger arm ratio through larger rotors, a better pressure
distribution through stiffer calipers and more pistons and sometimes a higher friction coefficient
which also changes brake balance.

That's why I'd prefer the smaller piston area of a Stoptech ST40 or the Boxster calipers. Almost
same balance as stock, but much better (stiffer) feel, controlability and modulation.

drsilviuro:
How about CP5200 (4 pot)?

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