I have a 2013 gt track pack. Is it possible to fit the 2013-2014 6 piston brake calipers? If so what part are needed and is it a significant improvement?

Are the gt500 rotors bigger than the track pack brembo rotors?

 

In addition to the above, I'm actually happy with the brembos up front but if there is a significant improvement in replacing them with the gt500 brakes then I am interested. I do fast road driving and planning on the occasional track day and autocross. The car will be around 500 whp in the future. I don't need to replace them just yet as the hawk pads have plenty of lining while I'll get the brembo rotors turned soon.

What is a recommended upgrade for the rear?

 

They'll fit and are 15" rotors instead of the 14" that come on the track pack cars. I was looking to upgrade from the non Brembo brakes on my 13' GT to either these or the 4 piston brakes and opted for the 14" 4-piston brakes instead after looking at the lack of replacement pads available and not really being a major improvement over the 14" Brembos.

 

When I read the title of the thread, I assumed you were asking about a rear brake upgrade, since the Brembos on the front are pretty good already. The discs on the back are tiny by comparison (11.8", I believe).

Anyway, if you want to upgrade the rear brakes to the GT500, it is fairly easy (you can keep the same calipers and just increase the size of the disc with new brackets). There is a kit available from Vorshlag...
http://www.vorshlag.com/product_info...roducts_id=606

 

Thanks i'll check that out, sounds just what I am looking for.

 

Better rotors and pads will do the same as those GT500 calipers, without the GT500 MC you will actually lose clamping force. You also are adding more rotational and unsprung weight to the car.

 

I think about it like this. The new GT PP uses 15" rotors and 6 piston calipers. Basically the same as the GT500 brakes.

Granted there was the weight increase on the new GT, but stopping distance on the PP was near identical to the 13/14 TP. And the PP has much wider tires.

I conclude based on this data that the bigger rotors and calipers do minimal to improve braking. The big difference is probably if you track all day. The bigger set up can handle heat better over extended time.

 

Unless you have 14inch 2 piece rotors or brake cooling, all things being equal the 15inch may end up being better but I feel like they are only marginally better than the 14inch of the same quality. Plus if you are tracking without brake cooling then you need more help than just bigger brakes.

 

True. The new brakes on the PP look awesome. But they perform about the same on the street as the old TP Bremobs imo.

 

I think that is due to pad choice, like I said pads make a huge difference, if someone is some how using race pads and R comp rubber and still need more brake that is when you should switch to the 6 pot.

 

I got some new take-off gt500 brembos on Ebay from shelbyauctions. Was going to go with the 4 pot , but for 830$ plus shipping , I decided to go all out and get the 6 pot.
Going to go with lighter forgestar 19" wheels to offset some of the extra weight, those rotors are about 10 pounds heavier then stock.

 

Agree with Brandon302 & Typesredline.


I considered this upgrade as well and concluded that it would only benefit in track situations where the brakes take a lot of abuse. Even though you could source a light weight rotor option it still did not seem better than doing the same with the stock Brembo's and upgrading the pads....brake ducts never hurt either.

 

Simply Installing Hawk brakes on my non brembo GT & properly bedding them on turned rotors made an unbelievable difference on my car.

 

Wish I could get 15" 6-pots under my 18" wheels... If you do the bigger rotors up front you should do larger rotors in the rear as well cause you'll be getting more torque out of the front setup with 15" rotors. Probably doing the GT500 14" rear setup would be good.

 

Curious. If you had the brembo 14" 4 pots and upgraded to the 15" 6 pots. Could the "old" 14" and 4 pots be adapted to work in the rear?

 

That may be possible in theory, but I think it wouldn't be worth it. Under heavy braking the weight transfer goes to the front, so the normal force (weight on the rear tires) goes down a lot. This means you have a lot less usable traction in the rear. This is why the factory setup is a pretty small rotor and 1 piston caliper. If you were to put the 4 pot caliper back there you'd be pushing the rear wheels into ABS quite easily. There are 4 piston kits out there for rear wheels, but unless your suspension is heavily modified and the car stays very flat under heavy braking I think it's overkill.

The most cost efficient option for the rear is to increase rotor size and change pads. As already mentioned there are some good kits from Vorshlag and Steeda for this already. The only problem is the bracket needed to re-locate the caliper requires the removal of the axles. So it becomes a larger project.

For now I decided to keep the 11.8" rotors in the back and put on Carbotech AX6 pads. They are 300 deg F more fade resistant on road courses, and offer higher friction lining, but still ok on the street from a noise point of view. For the last 2 seasons I've been using Carbotech XP10 compound with the 4 piston Brembos, and it's been awesome. Very happy with the braking performance there. I think these rear pads will help further.

 

Yes. There are brackets. I think Wilwood makes a kit.