I've got a friend that has a performance brake company. Take a look at www.fastbrakes.com
So we were talking and I told him I'm not aware of a performance brake upgrade for the SVTF that's "affordable" I've seen Brembo & Baer kits. He said he's always wanted to offer an SVTF kit but didn't have access to one for fitting.
So I headed over and he made some measurements and now has Willwood 4-piston caliper in the works. His opinion was the factory disk diameter was adequate for most use.
Should have all the parts ready to install in a week or two. I'll post pictures and pricing once he's done.

That sounds awesome, this is something i would be interested in especially if its budget friendly.

and Wilwood calipers look serious!

Good luck to your friend.

It will be hard to create a performance brake kit with a vehicle this old. But it's worth a try. He should look into creating a rear brake conversion and performance brake kit for the newer 2012s or even the MK2 focuses 08-2011.

-Ray-

The factory diameter is adequate but the thickness could use increasing. The problem with fixed calipers like the Wilwood is that they force a compromise in offset. IMO, why bother doing this when Todd @ TCE has done it well for years?
http://www.tceperformanceproducts.com/focus/kits-13/ (http://www.focusfanatics.com/forum/redirector.php?url=http%3A%2F%2Fwww.tceperformanceproducts.com%2Ffocus%2Fkits-13%2F)
Yes, the kit is a chunk of change, but those rotors, even the 12.2" units are far superior to what comes on the car that, IMO, it is worth it. I took those rotors, asked for them 1.1" thick and paired them to PBR PGCs (same calipers as in the Baer kit). Works with factory 16s and on track I have people comment that I usually brake two markers after they see god.

I guess the bottom line for me is that because of the caliper clearance issue, a caliper only kit won't be low budget. You'll need new wheels or to run spacers and longer studs. Also, it doesn't address the performance need for more rotor mass.

I really dont no a hole lot about brakes but i dont see were any of this would be much of a benefit over the stock calipers an some good pads an rotors...

I got EBC roters, green stuff pads an steel braded lines an i can lock up all four tires if i cram the pedal down hard.... these cars don't weigh nothing unlike a muscle car.

I really dont no a hole lot about brakes but i dont see were any of this would be much of a benefit over the stock calipers an some good pads an rotors...

I got EBC roters, green stuff pads an steel braded lines an i can lock up all four tires if i cram the pedal down hard.... these cars don't weigh nothing unlike a muscle car.

Well, locking the wheels should be hard if you have antilock brakes but nontheless, the reason or desire to upgrade brakes besides the ricer street value, is to improve long term long duration heat rejection. EBC, Brembo, Wildwood or DBA Kangaroo Paw rotors are able to provide better thermal performance than stock rotors. Side by side a one off panic brake, I would think all brakes would perform alike. So the brakes job is to take car energy and turn it to heat, car energy comes from the engine, so lets look at a fast road race course or long autocross track. Big blasts of engine power and hard braking will heat the rotors up fast, now stock rotors will soon overheat, pads will get greasy and eventually the rotors will crack, warp and fail, possibly fracture after turning bright red.

A thicker and or larger diameter rotor will have more surface area to dump the heat into superheated air, cooling themselves off to stave off destruction. Not that super duty brakes won't fail, but the interval to failure is much greater due to having swirly designs and curved vanes in the middle to improve internal cooling.

Big blasts of engine power and hard braking will heat the rotors up fast, now stock rotors will soon overheat, pads will get greasy and eventually the rotors will crack, warp and fail, possibly fracture after turning bright red.
Winner, winner, chicken dinner. The key is mass. Even the best design of rotor cannot reject heat instantaneously. You need a place for it to go.

and as soon as you crank up to fancy rotors you can't run stock class autox anymore :)

"Fancy Rotors", does that mean larger than stock, drilled, slotted, or all o f the above?

I believe he has the calipers and rotors and possibly even the caliper adapters ready. I just need to get over to his shop for a trial fit.
I believe he will have different options to suit most needs & prices but he's not trying to compete with Brembo or Baer. Those guys have their niche market, www.fastbrakes.com has their market. I'll report here ASAP, hopefully within the week and will include pictures and pricing.

I think the regulations are aimed at any deviation from the stock configuration on brakes, drilled and slotted or other mods seem to disqualify a car from the stock class on autocrossing. I'd love to see what this setup looks like still, options are good to have.