RacingBrake

RacingBrake has a very complete coverage on caliper rebuilding for Porsche.

Click this link and find the parts you need to tune up your calipers they deserve.

http://www.racingbrake.com/category-s/7185.htm

We have piston sizes from 28/30/33/34/36/38/40/42/44 to 46mm, with 30 & 32mm in height, so chances are we have all the size for your calipers but if you can't find your models/calipers just tell us and we will identify them for you.

RB pistons are machined from solid 304SS bar stock, with thin wall cut process to reduce the weight, having 6 vents to help brake release. The surface is of chrome plated to assure the smoothest movement for modulation and brake control, and for leak free service whether the calipers are under cold winter in your garage, or the hot summer on tracks.



RB's unique yet simple design Stainless Steel piston is all you need to replace a variety of OE type pistons:



The advantage of Stainless Steel piston over OE's aluminum:

1. Better thermal stability (less volumetric change as temperature changes)
2. Better strength & rigidity
3. No corrosion
4. Very lower thermal conductivity - Transmit on about 10% of the heat vs. aluminum, so you will not boil your brake fluid nor would need titanium shims or other cumbersome constructions like you see on different OE pistons.
5. One solid piece construction - Unlike OE's 2pc which the top (yellow) part is usually of "phenolic" - different material than aluminum so it can get cracked or separated due to the heat stress.

Regardless what type of OE caliper pistons you have:

Like this shaft/seal inside pistons from 996 Turbo



Or this type from 997 TT



Or this type from 997 GT2/3 (Phenolic top is separated from piston body):



They can be replaced with RB SS piston, seal and dust boot for a clean and less cumbersome set up, and bring your calipers to a new life.



Picture below shows SS pistons, Oil seal (in black), and Dust boots (blue) which is made of Teflon for high temperature track application. If you don't track you will only need standard (black) boots.


All parts are in stock - Ready to ship.

Mike J

Interesting. I would have thought it would be better to have higher thermal conductivity to transfer the heat off the pad into the body of the caliper and the surrounding air/strut to increase the cooling area and take advantage of the larger thermal mass.

With these pistons, do you still need to use brake dampeners on for example 993 brakes to avoid squealing?

I might have do some reading on braking systems ...

Cheers

Mike

RacingBrake

On the contrary, people are spending money installing titanium shims for shielding the heat from getting into brake fluid.
https://hardbrakes.com/index.php?mai...products_id=30

RB stainless steel pistons can do just that but eliminating the shims.

In our experience, brake squeaking is associated to the brake pad compound, not those dampeners, nor beveling the pad edges.

RB brake pads used in Mercedes SL550
!11 SL550 No more brake squealing!

RB brake pads used in Aston Martin DBS (converting to iron rotor from CCM)
Converted from carbon ceramic to steel rotors. No more squeaking!!!!

We have ET-500 and XT910 compounds for Porsche's that are low dust and no squeaking.

ronnie993tt

Must be missing something or it's just the years in packaged goods marketing but I'd have given the calipers a spray of high temp clear before posting 'em.

JPS

Has anyone tried these?