Stoptech Stage 2 brake kit

[SubaruWRC]

Hey so I'm looking at getting this brake upgrade kit here I was wondering if anyone has gotten this kit. If so it it any good? Also is this a good price? Lastly this kit would leave me in the STU autocross class, right?

[zax]

I believe that since are retaining your stock calipers and pad size, you will remain in the STU, but this is as far as you'll be able to push the car brake-wise before you'll qualify for SM. You might want to consult SCCA regarding the regulations, however.

Regarding the kit: pads, rotors, SS brake lines, and good fluid is a common and excellent upgrade. Make sure to stay away from drilled rotors.

[SubaruWRC]

Does anyone know where you can buy stoptech slotted rotors by themselves? I would just like to do a price comparison. Also what brake fluid should I get since this kit doesn't come with it?


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[zax]

Does anyone know where you can buy stoptech slotted rotors by themselves? I would just like to do a price comparison. Also what brake fluid should I get since this kit doesn't come with it?


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To be honest, I would recommend standard blank rotors over slotted rotors.


Blank rotors with a good set of pads and fluid.

[SubaruWRC]

O really why are standard rotors better than slotted?

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[zax]

O really why are standard rotors better than slotted?

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To be honest, slotted rotors are mostly for looks. In theory, the slots provide a channel for heat and air buildup to be removed from the rotor. In practice, the slots get clogged with brake dust in short order and provide less surface area for the pad to grip.

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[SubaruWRC]

Okay so I still want stainless steel lines and I've heard good things about the stoptech street performance pads which come out to about 198 on rally sport direct. Meaning that those stop tech slotted rotors cost about $365 in that kit. I do plan on tracking my car so wouldn't slotted be better since from what I read there isn't too much of a difference but slotted helps on the track? Maybe I can find some cheaper slotted rotors?

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[zax]

Okay so I still want stainless steel lines and I've heard good things about the stoptech street performance pads which come out to about 198 on rally sport direct. Meaning that those stop tech slotted rotors cost about $365 in that kit. I do plan on tracking my car so wouldn't slotted be better since from what I read there isn't too much of a difference but slotted helps on the track? Maybe I can find some cheaper slotted rotors?

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Up to you. I doubt you'll see much difference on the track between slotted and blanks.

[SubaruWRC]

What is a good pair of blanks? I've seen centric premium and standard.. Is the premium worth it?

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[zax]

Centric Premium vs. Centric Standard rotors - Subaru Legacy Forums

[Mikie13]

There is supposed reasoning behind slotted rotors helping to remove any glazing on the pads...but they also lead to pads being chewed up quicker.

[zax]

There is supposed reasoning behind slotted rotors helping to remove any glazing on the pads...but they also lead to pads being chewed up quicker.

Mikie: Again in theory you're right. The slots are intended to remove fluid and air buildup such that the pad makes a direct contact with the rotor. However, in my experience, the slots merely get filled with caked brake dust.

IMO there's nothing negative about running a slotted rotor, besides price.

[Axex]

I don't know if this is true so maybe someone could shed some light, but aren't slotted rotors that are drilled in a sense weaker than just a regular rotor? By drilling through the rotors after they've been set I would think they are losing a lot of integrity, but maybe this is not enough to be concerned about? I don't think I would run them if I was going to be pushing it to the limit on a track... I've heard that to be done properly they need to have the holes in them when they are cast or whatever.

[Mikie13]

Yep. Most drilled rotors are just that...drilled, which kills the structural integrity. It leads to cracking through the multiple heat cycles that rotors are subjected to.

That being said...many of the higher end cars you see with them (such as Porsche) use cast rotors where the rotors are formed with the holes in them, making them stronger.

That also being said...I have drilled rotors on my STI simply cause I love the look, and I don't do any tracking or intense driving, so I won't be subjected to near as much use that causes damage.

[SubaruWRC]

So I guess the verdict is to get plain rotors because they are cheaper and because there is no benefit with slotted rotors and drilled can actually be worse because they crack easier?

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