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Old 06-10-2005, 05:07 PM   #1
13secwrx
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Default Stoptechs vs Sti brembos

Which one do you think is better. I am upgrading my front brakes...

Opinions and facts needed/wanted.

thanks
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Old 06-10-2005, 05:21 PM   #2
coolblue05
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stoptechs, for sure. I love mine.
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Old 06-10-2005, 05:24 PM   #3
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+1 for stoptechs here, I cant complain about them really (except the price tag )
but they so far have had no issues, street and track use.

The STi Brembos are also heavier and to me, since it's a stock piece I like the extra "bling" of a red aftermarket caliper, may sound lame to some, but thats just my 2c.
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Old 06-10-2005, 05:35 PM   #4
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doest sound lame, both colors are great. Stoptechs are better..
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Old 06-10-2005, 05:39 PM   #5
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If for nothing else the Stoptechs are better because of the lighter, better cooling 2-piece floating rotor. Also, there are a few more wheels that will fit over Stoptechs that won't fit over the Brembos.
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Old 06-10-2005, 05:40 PM   #6
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Stoptechs are designed specifically for the WRX by experts.

I'd rather get the stoptechs... but i cheaped out and got the non brembo 4-pots instead
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Old 06-10-2005, 06:16 PM   #7
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Quote:
Originally Posted by Roy Lin
Stoptechs are designed specifically for the WRX by experts.


And I suppose the STi's brakes were chosen by pulling names out of a hat?
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Old 06-10-2005, 06:58 PM   #8
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no, but the stoptechs were deisigned for the specific application for the WRX. I'm assuming the STi probably has different plumbing, balance, etc.

No need to be a sarcastic dOoSH noZzlE, mmmmmkay?

PS And yes, the STi's brakes were designed by a million monkeys with computers who also happened to write some shakespeare
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Old 06-10-2005, 07:11 PM   #9
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Stoptech shaved 16 pounds of unsprung weight over stock according to my scales. =)
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Old 06-10-2005, 07:15 PM   #10
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Ohh....im giddy already...wont the extra rotating mass of the rotor slow me down a tenth or so...or am i worried for no reason. I am all about speed..but I am realizing that i have to stop also
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Old 06-10-2005, 07:36 PM   #11
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I'm not sure how much of an effect it has on acceleration... I forget is the rule of thumb that one pound of unsprung weight is equal to ten pounds of sprung weight, or is that for rotating vs. non-rotating weight?
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Old 06-10-2005, 07:46 PM   #12
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On a 3000 lb car every 7 pounds shed is equal to a horsepower (effectively in accleration).. Plus you obviously get a better handling/stopping car. Reducing weight is signicantly better than adding power - at least for getting around a track..

As for brembo's versus stop-techs. As for stop-techs versus STi Brembo's.. Absolutely postively no question - the stoptech are superior. Superior in feel, superior in weight, superior in design, and proven durability (how many touring cars are now running stop-techs and giving props to them?). Now brembo's big brake kits are a different story. The comparision becomes closer, but then the cost of the brembo's is so much more it again favors the stop-techs without a doubt.

My expirence with stop tech and brembo -
05 STi with stock brembo's/pads/rotors/lines
05 STi with front slotted rotors and aluminum hats, steel lines, motul fluid and hawk t-10/14 pads and ferodo 2500 (for street)
03 WRX stock
03 WRX with steel lines, superblue fluid, stoptech calipers/rotors front, rear stop tech rotors and axxis ultimates and hawks for track
AND finally to make things more entertaining Brembo/Porsche GT3-R racing brakes on my old 996 - which are still the best brake package I personally have ever felt but cost about 6K.

nathan

Quote:
Originally Posted by 13secwrx
Ohh....im giddy already...wont the extra rotating mass of the rotor slow me down a tenth or so...or am i worried for no reason. I am all about speed..but I am realizing that i have to stop also
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Old 06-11-2005, 12:17 PM   #13
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Quote:
Originally Posted by 13secwrx
Which one do you think is better. I am upgrading my front brakes...

Opinions and facts needed/wanted.

thanks
What do you use the car for? Why do you want a BBK?
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Old 06-11-2005, 12:30 PM   #14
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http://www.rallyperformance.com/brakes.shtml
scroll to bottom.
6POT AP caliper w/ 378mm rotors, thats huge!! about $1K more than stop techs though.
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Old 06-11-2005, 04:33 PM   #15
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I'm surprised no one has mentioned brake bias. The Stoptechs are designed around the WRX stock brake system. They take into consideration the rear brakes and bias a bit of braking rearward. The STi Brembos are designed around the full Brembo F/R package. So if you were to mount just the front STi brembos you will have a heavier front brake bias than stock and will most likely have longer stopping distances (actually, take a look at Stoptech's whitepapers regarding brake bias). If you were to get the rear brembos at the same time then your bias would be fine. IMO, the STi Brembos are more than enough brake as a full kit than most people would need. The only limiting factor are pads and fluid. Things can be improved if you go to brembo's better ventilated and lighter 2 piece rotors.

as an aside, I had a set of the Brembo GT-R kit in hand yesterday for the STi. Those caliper are much lighter and oh so sexy. Fully forged with ventilated (cross drilled) titanium pistons (8 of them per caliper). $10k for brakes, oh yeaaahhh.
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Old 06-11-2005, 04:49 PM   #16
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another extremely happy stoptech owner.

Far and away the best modification I have made to date.
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Old 06-11-2005, 04:53 PM   #17
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Quote:
Originally Posted by Arnie

as an aside, I had a set of the Brembo GT-R kit in hand yesterday for the STi. Those caliper are much lighter and oh so sexy. Fully forged with ventilated (cross drilled) titanium pistons (8 of them per caliper). $10k for brakes, oh yeaaahhh.
can you post a link so i can read about them please.

have you seen the newest ENDLESS calipers 12POT, 6mini pistons on each side, pretty crazy!! i seen them in the latest issue of Modified Mag.
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Old 06-11-2005, 06:01 PM   #18
moremaga
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Smile Stoptechs

Another vote for stoptechs! Best performance for the $$$.
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Old 06-12-2005, 12:39 AM   #19
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Old 06-12-2005, 12:45 AM   #20
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damn those are hot!
the link says they are for a porsche, do they make them to fit an sti too?
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Old 06-12-2005, 12:49 AM   #21
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Yes, the one's I had in my hand yesterday were for an STi. 8 pot with the cool drilled ti pistons. Wish I had my camera with me. That shop also had the JIC Mazda RX8 drift car there being worked on.
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Old 06-12-2005, 02:57 AM   #22
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I agree that the Stoptechs are awesome, but knockback is just so damn annoying. Just backing out off my drive ay, I get knockback by the time I get to the end of the street. And of course, it's worst right after you take a sharp turn. It's not air in the hydraulic system. Most likely due to the very weak WRX hub/bearing assembly. Any of you guys have the same problem?
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Old 06-12-2005, 03:02 AM   #23
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That's a pretty well documented issue with stoptechs and a wRX, as well as the brembos on 04STis. the 05 sti seems a wee bit better but some still suffer from it.
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Old 06-12-2005, 03:12 AM   #24
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Yes, I've read through all the posts that are knockback-related. But if you read through most of them, folks are getting symptoms of kb in "racing" condition, which I can totally understand. None of these posts ever mentioned kb problems in daily driving situations. I love how my Stoptechs resist fade, stops shorter, and most of all does not trigger the ABS as much as the stocks system. I'm looking forward to the end of our auto-x season when we have an endurance run of 5 non-stop laps and not having to worry about fade. But it is really annoying when light duty daily driving can cause kb.
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Old 06-12-2005, 03:42 AM   #25
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I hear you. Have you looked into replacing your front bearings for a fresh set? Perhaps a fresh set will have less play and lead to less KB. Our local suby shop usually completely flushes and cleans the original grease and replaces with hitemp race grease for better life. I recall some folks looking into some type of spring system behind the pistons to push them out? Who knows if that is even possible.
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