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Rear brake size? Really ford!

Skenneyjr

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Lol at this thread.

Here's the thing: the base V6 brakes are adequate for 90% of street driving as long as you don't like to do 120 on the highway. Even then they work well enough, solid rear disc and everything.

Ecoboost PP and base GT brakes are overkill for most drivers on the street and for a mostly stock Ecoboost I'd bet they're more than sufficient on most track situations.

GT PP brakes only upgrade up front....maybe this was done for cost, but I'm betting it was more because you just can't overwhelm the rear discs until LONG AFTER you overwhelm the front 15" rotors unless you're going aftermarket on pads. And while you can do this, methinks Ford had different criteria than you at that point. Namely zero brake noise, long life, excellent bite when cold, easy on rotors, unlikely to leave deposits on rotors, etc. I've used race pads on a street car. They started to go to shit if I didn't get them good and hot every once in a while.

Yeah, the GT350 gets bigger front and rear brakes. But now we have a car with a stiffer chassis and less weight transfer under braking, and in theory much higher speeds to brake from which means way more heat production to achieve the same decel. We're at racecar.

For everyone else, unless you do tons of work, even a GT PP is at best a very soft very street friendly weekends only racecar. There simply isn't a need for 14" rear rotors. And 13s allow for smaller wheel fitment which means more slicks for the strip guys.
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DanenGraham

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So got to flipping through my ford booklet for my gt with the performance pack and it says I have 13" Rotors with a SINGLE PISTON rear brake caliper!

Had you not read the "ford booklet" would you even know or have realized it was only a single piston rear caliper?
 

Impulsed7

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Only regret about that rear single piston setup is the integrated e-brake. Gotta wind that piston back in with the stupid special tool. Huge pain in the ass at the track when they are piping hot...
 

uglygun

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Only regret about that rear single piston setup is the integrated e-brake. Gotta wind that piston back in with the stupid special tool. Huge pain in the ass at the track when they are piping hot...

There is the thing that needs changing.

A nice quick change pad for the rear.

Like others have said, 13 inch rotor gives a hell of a lot of leverage for braking and a single piston is fine. Changing the pads on them has sucked since the damned 90s.

what I wish they did was make a lighter performance pack wheel. At least give an option like they did on the Focus RS. Why cant I have nice open wheels that are some where between the Focus RS wheels and those of our Perf Pack cars? Heavier car and all that jazz but holy shit our wheels are pigs.
 

DB83

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Back from the dead!!!

Anyone know the rear calliper piston size for the GT? I'm looking at retrofitting the a 2 piston rear setup from a 350Z/G37/EVO/WRX setup. Just trying to figure out which works best for brake bias.

Also trying to see if the discs would work, as the Nissan 350Z rear discs are 20mm thick and eco discs are 22mm, where ours are 25mm.

Anyone know of any other vehicles that used a 2 piston rear setup?
 

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barron64

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I have done one track day with the stock PP1 brakes on my 18 GT convertible and I can say they are more than adequate for the task in stock form, at least for my talent level. If you plan on tracking the car frequently, I would suggest getting a dedicated set of track pads and saving the PP1 stock pads for street duty. If you really want to improve braking performance, start cutting weight...this is hard however as I like my air conditioned seats, lol. Anyway, yes...Stock rear calipers are ugly and I don't know what can be done to improve that. Paint them some nice color and it is like putting lipstick on a pig. I even upgraded to some Steeda floating rotors F&R, on a damned group by, justifying cutting weight btw, and the bling of the rotor does not obscure those ugly rear calipers. GT350's have nice looking rear 2 piston Brembo calipers...
Brembo rears.webp
 

NightmareMoon

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Back from the dead!!!

Anyone know the rear calliper piston size for the GT? I'm looking at retrofitting the a 2 piston rear setup from a 350Z/G37/EVO/WRX setup. Just trying to figure out which works best for brake bias.

Also trying to see if the discs would work, as the Nissan 350Z rear discs are 20mm thick and eco discs are 22mm, where ours are 25mm.

Anyone know of any other vehicles that used a 2 piston rear setup?
Should have started a new thread, you’re just going to get a bunch of traffic on the original question/topic.
 

BmacIL

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GT350's have nice looking rear 2 piston Brembo calipers...
Four piston, actually, and much bigger rotors that significantly change the brake bias.
 

Mustangpursuit

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I have the Base GT and I am a DD and do not track, so I am kinda shying away from the brembo upgrade, not only that, i would end up having mismatched colors at first with the rear caliper, the base rears are silver/grey which match more closely to the base grey coated fronts. Would have to paint the rears black or get the FP rear kit, it comes with a 0.8" larger rotor with the same stock caliper but black to match either the 50 anniversary black gloss or the FP front satin black brembo caliper, or just get the full Bullitt kit and you get red on both sides. The base brakes work well for me, no sounds and great stopping power for my driving habits. I kinda think the 4x1 looks more proportionate than a 6x1, however the dodge base scat packs has a decent brembo bias with 4x2 set up and even offers a 6x4 upgrade. Some cars have it worse, the US version of the Buick Regal GS comes with big bright red Brembos up front with a mismatching tiny silver caliper in the rear.
 

DB83

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Fair enough, i'll start a new thread!
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