GT Performance Package Brakes to Ecoboost?

[matteos]

I just switched out the stock two piston calipers on my V6 with the 4 piston calipers from the GT. Couple of thoughts. Make sure you have the crush washers on right, I messed one up and the system drained over night, I've fixed it since and those 4 piston calipers are superb compared to stock.

Get yourself a power bleeder.

https://www.amazon.com/gp/product/B00CJ5DZE2/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

With the correct attachment for the Mustang

https://www.amazon.com/gp/product/B000Q6UHQK/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

I can't tell you how much easier this makes it over someone pumping the brake fluid through with the pedal. Watch the relevant Youtube videos.

You might need a bigger splash guard behind the rotors. I didn't get one for the 4 piston, but I'm not sure about the Brembos. If the rotor is substantially larger you might need it, cheap part.

Make sure you have the correct brake lines. I don't know if the brake lines are different between the 4 and 6 piston.

I think you have to change the master cylinder out. I'm not 100% sure, but I think the Brembos have a bigger master cylinder. This might complicate things. If you have to change the master cylinder then the attachment I linked to for the power bleeder might be different.

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[I Bleed Ford Blue]

I think you have to change the master cylinder out. I'm not 100% sure, but I think the Brembos have a bigger master cylinder. This might complicate things. If you have to change the master cylinder then the attachment I linked to for the power bleeder might be different.

I don't think so, if it was different then ford would give you a new master cylinder with the 6 pot brembo kit they sell. the kit only comes with rotors, calipers, dust shields, and hardware.

https://lmr.com/item/M2300V/2015-Mustang-Ford-Racing-Brembo-6-Piston-Brake-Kit

 

[matteos]

I don't think so, if it was different then ford would give you a new master cylinder with the 6 pot brembo kit they sell. the kit only comes with rotors, calipers, dust shields, and hardware.

https://lmr.com/item/M2300V/2015-Mustang-Ford-Racing-Brembo-6-Piston-Brake-Kit

I could very well be wrong. It's something I read when I was reading up on what I needed to change from 2 piston to 4 piston. Still. The OP might want to get a definite answer before starting.

https://www.mustangecoboost.net/threads/brakes-upgrade-from-base-ecoboost-to-base-gt.16019/

 

[Vicr]

The 6 piston FP kit is on my radar for this spring. Trying to compare apples to apples with the different sellers isn't easy. The common differences in the kits are: no brake pads vrs include brake pads, brake lines vrs. not and Vorschlag offers their version of the FP kit with the "Brembo" master cylinder. For the most part CJ PP has the best deal for the kit and the master cylinder with "correct hydraulic ratio" from Vorschlag is $123.

 

[shogun32]

For the most part CJ PP has the best deal for the kit

This is far cheaper even after adding some extra Ford parts to finish out the kit.

https://www.ebay.com/itm/2015-2019-...128631?hash=item2d00cf8637:g:4KEAAOSwWhlc3hK0

 

[CrazedAntelope]

Funny to have found this thread. I am in the process of doing this swap. I purchased GT-PP 6 pistons from ebay (shelbyauctions), a GT-PP master cyl from Vorshlag, and a Motive bleeder from Optimum Performance.

If all goes to plan, I should be attempting the swap next week!

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