Advice/help needed on brake upgrade

[Musthaveang]

Happy new year everyone!

I have a 2015 base model ecoboost (auto, non-pp) and a 6-piston GT PP brembo brake kit(rotor, lines, pads, caliper). I've done fair amount of research but I couldn't figure out following questions in terms of upgrading to this kit:

1)Does this kit even fit my base ecoboost? I have the performance pack 19-inch wheels already.
2) Should I also upgrade my Master Cylinder to GT's?
3) Should I upgrade to a different Brake fluid?
4) Should I also replace Rear brake caliper and rotor or that is fine by running my solid 12.6 inch rotor.

Anything else should I do to make sure everything runs correctly?

Thank you so much for your time and help.

Jack

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[kz]

1. Yes
2. Yes but people haven't done it and it obviously works.
3. Up to you, you'll have to bleed them anyway but unless you're tracking the car, any DOT4 is fine.
4. There isn't exactly anything to replace it with - at least easily - and that caliper / rotor is just fine.

 

[Musthaveang]

1. Yes
2. Yes but people haven't done it and it obviously works.
3. Up to you, you'll have to bleed them anyway but unless you're tracking the car, any DOT4 is fine.
4. There isn't exactly anything to replace it with - at least easily - and that caliper / rotor is just fine.

Thank you so much! Do you happen to know if DOT 4 is the factory recommendation for Ecoboost base model as well?

 

[kz]

Thank you so much! Do you happen to know if DOT 4 is the factory recommendation for Ecoboost base model as well?

Look in the user manual - it is in the specification section of it - but 99.99% certain every version has a low viscosity DOT-4 specified. I've used Pentosin LV rebleeding the brakes, now have Motul 600 I think.

 

[Musthaveang]

Look in the user manual - it is in the specification section of it - but 99.99% certain every version has a low viscosity DOT-4 specified. I've used Pentosin LV rebleeding the brakes, now have Motul 600 I think.

Thank you! You are correct, it is same for ecoboost and GTs. Enjoy your day!

 

[SVO MkII]

Happy new year everyone!

I have a 2015 base model ecoboost (auto, non-pp) and a 6-piston GT PP brembo brake kit(rotor, lines, pads, caliper). I've done fair amount of research but I couldn't figure out following questions in terms of upgrading to this kit:

1)Does this kit even fit my base ecoboost? I have the performance pack 19-inch wheels already.
2) Should I also upgrade my Master Cylinder to GT's?
3) Should I upgrade to a different Brake fluid?
4) Should I also replace Rear brake caliper and rotor or that is fine by running my solid 12.6 inch rotor.

Anything else should I do to make sure everything runs correctly?

Thank you so much for your time and help.

Jack

I installed the GT PP 6 piston brakes on my 2018 EB PP car, mainly because it sees HPDE use.

1. I believe so. I did wind up reusing my 4 piston brake hoses, vs the hoses that came with the 6 pistons. I don't remember why though?
2. I didn't change my master cylinder, but my car was a PP so it had base GT brakes already.
3. Only if you plan to do HPDE events.
4. Depends on how you plan to use the car. For street use, don't bother.

If you are planning any track use, make sure you ditch the big dust shields, or trim them back (maybe your kit already came with the smaller GT PP shields).
If you have a spare, it will no longer fit on the front.

 

[Musthaveang]

I installed the GT PP 6 piston brakes on my 2018 EB PP car, mainly because it sees HPDE use.

1. I believe so. I did wind up reusing my 4 piston brake hoses, vs the hoses that came with the 6 pistons. I don't remember why though?
2. I didn't change my master cylinder, but my car was a PP so it had base GT brakes already.
3. Only if you plan to do HPDE events.
4. Depends on how you plan to use the car. For street use, don't bother.

If you are planning any track use, make sure you ditch the big dust shields, or trim them back (maybe your kit already came with the smaller GT PP shields).
If you have a spare, it will no longer fit on the front.

Thanks so much! Do you recommend me going to the dealer for the brake kit replacement/install or maybe a brake mechanic shop? I am pretty lost that dealers suggest me to do a full brake fluid flush ($185) + replacement for front and rear ($600 in total). Mechanic shop quoted me $3-400 in total for bleeding and replacement.

 

[SVO MkII]

Thanks so much! Do you recommend me going to the dealer for the brake kit replacement/install or maybe a brake mechanic shop? I am pretty lost that dealers suggest me to do a full brake fluid flush ($185) + replacement for front and rear ($600 in total). Mechanic shop quoted me $3-400 in total for bleeding and replacement.

I did it myself. You don't have to replace the rears to do the fronts. As far as a flush, you will have to bleed the fronts once they are installed. They may consider this a "flush" for billing purposes. Any competent shop should be able to handle this job, it's very straightforward.

 

[Musthaveang]

I did it myself. You don't have to replace the rears to do the fronts. As far as a flush, you will have to bleed the fronts once they are installed. They may consider this a "flush" for billing purposes. Any competent shop should be able to handle this job, it's very straightforward.

Gotcha, really appreciate your insights! Do you know if I have to install the brake dust shield? Also if I only do fronts for now I don't need to bleed the rear right?

 

[SVO MkII]

Gotcha, really appreciate your insights! Do you know if I have to install the brake dust shield? Also if I only do fronts for now I don't need to bleed the rear right?

If you are planning any track use, make sure you ditch the big dust shields, or trim them back (maybe your kit already came with the smaller GT PP shields). If you are serious about track use, you will need to fabricate some additional cooling (but that's a topic for another thread).

For street use, it won't really matter. I'm not sure if the base dust shields will fit with the larger rotors. If so, I guess you could just leave them on.

 

[robsmack01]

Gotcha, really appreciate your insights! Do you know if I have to install the brake dust shield? Also if I only do fronts for now I don't need to bleed the rear right?

Im curious about this too. Im looking to upgrade my base GT front breaks to the ford performance kit. Ive watched videos and seems straight forward. The bleeding part is kinda vague. Guess you gotta do it to fully understand how it should "feel'. Mainly Im wondering if the rear brakes need to be bleed too. If im only changing the front. Its a brand new mustang so i dont think i will do a full flush. Just fill the fluid back up

 

[SVO MkII]

Im curious about this too. Im looking to upgrade my base GT front breaks to the ford performance kit. Ive watched videos and seems straight forward. The bleeding part is kinda vague. Guess you gotta do it to fully understand how it should "feel'. Mainly Im wondering if the rear brakes need to be bleed too. If im only changing the front. Its a brand new mustang so i dont think i will do a full flush. Just fill the fluid back up

No, you don't need to bleed the rears when you replace the fronts. There is nothing special about bleeding the brakes on these cars. Just like any other car.

Please don't take any offense to this, but the only functional reason to install the GT PP brakes is if you plan to do HPDE or other road coarse events. The 4 piston brakes are more than adequate for street use. Just sayin'.

 

[robsmack01]

No, you don't need to bleed the rears when you replace the fronts. There is nothing special about bleeding the brakes on these cars. Just like any other car.

Please don't take any offense to this, but the only functional reason to install the GT PP brakes is if you plan to do HPDE or other road coarse events. The 4 piston brakes are more than adequate for street use. Just sayin'.

No offense taken and youre right. More for appearance than anything else. Im putting on some pp2 wheels and it really shows off the rotors and calipers. Im aware there are some other options like caliper covers (not for me), painting or vinyl wrapping. I'd like to keep the look OEM. Tho not practical expense, it seems like something i can handle. And thanks for the info about bleeding.

 

[Saulmoreno7]

No, you don't need to bleed the rears when you replace the fronts. There is nothing special about bleeding the brakes on these cars. Just like any other car.

Please don't take any offense to this, but the only functional reason to install the GT PP brakes is if you plan to do HPDE or other road coarse events. The 4 piston brakes are more than adequate for street use. Just sayin'.

Adding to what you said bro I’m planning to put 6 piston on my 2019 base modal gt can I reuse the same brake lines that or would I have to buy new ones?

 

[Musthaveang]

Adding to what you said bro I’m planning to put 6 piston on my 2019 base modal gt can I reuse the same brake lines that or would I have to buy new ones?

Yeah old lines will work

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