Anyone with aftermarket BBK kits care to weight in please do. I have several people who told me to leave the stock 997 TT brakes alone pointing to the fact that they already are phenomenal and tuned to the car. Still curious to see if anyone with bbk kits can shed some light.

 

Swapped out my PCCB's with the Girodiscs (2-piece floating slotted rotors) setup with Pagid yellow's for the track. This setups isn't technically a BBK but a lightweight high performance direct OEM replacement which works with the OEM calipers. These are preferable as they maintain the factory bias and the ABS efficiency which is critical at the track. This setup works great, the initial bite isn't as engaging as the PCCB's (a fraction more pedal pressure is required) but once the bite engages, the stopping power is fantastic.

I swap out the track pads for OEM pads for street use (due to squeaking on the pagids) and they work just fine. Hope this helps some.

 

I have a friend's car in my shop right now. It's has a brembo 408mm kit up front and 380mm in the rear. They do stop well but are they as good as the porsche braking systems, I don't really think so. they have smaller pad area and I don't think the bias is as good as it could be. I'm going cup car brakes on my car which are 380mm front and 350mm rear. I personally think that's the best possible setup for the 996 or 997 (pccb are the same size just lighter).

Overall the stock 997tt brakes are really really good. if you want better braking there are a few things you should do. first change to a more aggressive pad. second change out fluid to a higher boiling temp race fluid. third, consider upgrading to 2 piece slotted rotors. girodisc are the more affordable option for them and are great quality.

 

+1
I did almost the same setup, swapped my iron oem rotors for Brembo type 3 rotors (2 piece floating slotted rotors as Girodiscs) setup with Pagid RS29 yellow and SS lines.
While isn't as engaging as the PCCB's the initial bite is far better vs oem "iron" and I even believe once bite engaged the stopping power is higher vs the PCCB's at high speeds, it even needs sticky tires to avoid intempestive ABS actions on track. (A close friend runs the PCCBs for comparison)
I won't go back or to PCCBs from this setup. (And keep in mind my car is >800hp)

 

+1 totally agree with you. I also went with SS brake lines and Castrol SRF fluids. Once you get used to the brake modulation required (vs. PCCBs) this setup is fantastic. I also wouldn't switch back to PCCBs unless it was exclusively for street use. As flewis mentioned the 380mm front/350mm rear bias is perfect on the 997 turbo platform.

 

I am running the Brembo Big Brake Kit (GTR) with 15" front and rear rotors, along with Ferodo pads. Absolutely love the set-up. A bit pricey though.

 

pagid yellows on oem rotors (replace rotors every so often) ss lines, motul brake fluid 600

its a bit loud when cold but stops incredibly well on and off track