I was doing a reserch and apparently 4runner brakes with 4 pistons (non sport) version fits on a gt front rotors, And the sport version fits gt4 rotors. I think the brakes have to come off from a 95-02 3rd gen 4runners and will bolt on perfectly with no modifications.
Now my question is if they fit proportional valve needs to be modified? Becsuse it will be pusshing 4 pistons instead of 1.
If anyone has more info about this please post it here.

This post has been edited by diegohiga: Sep 25, 2011 - 1:20 PM

First question to you is, why upgrade to those calipers?

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Swaping to 3s and need something to stop faster.

This post has been edited by diegohiga: Sep 25, 2011 - 2:27 PM

How do you know that you have exhausted your current brake set up and need to go bigger?

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7afe and 5sfe= 1piston brake. 3sgte= 4 piston brake from factory. Im installing a 3s and i dont want a weak 1 piston brake system

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If you can get a good price on the calipers go for it.

This post has been edited by BonzaiCelica: Sep 26, 2011 - 1:22 PM

bonzai, idk what you're talking about? how could braking upgrades be overkill? if it stops you sooner whats the difference? isn't that a point of performance?

I'm with diegohiga on this one! -like the upgrade, how about some pictures!

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X2! no such thing as overkill if you want t stop faster.

brakes will fit, no questions about that

my question is, are you willing to try ? meaning, actually install and get them to work, you need to take some basic measurements and find a disc that will suit this new caliper, I don't think stock GT disc will be big enough for these calipers, 4runner comes stock with 16 inches wheels, and 17 inches on the sport version. which would point to the disc being the biggest they can fit behind the wheel.

it shouldn't be any harder than GT4 brakes and for a fraction of the cost, and the best part the amount of piston and most likely around the same diameter of disc.
it's definitely worth a shot, we just need someone to bite the bullet and try it, I mentioned this upgrades over a year ago but I already have Gt4 brakes so I wont be the one to try it.

I am more than willing to give it a try, just need some help finding the right size rotors.
From the research I've done they should be...
~318mm in diameter (perhaps a little more or less?)
~28mm in thickness (+/- ?)
-55mm center bore
and a 5x100 lug pattern (obviously..)

someone please take a second to let me know if those seem correct and I will find a solution.

This post has been edited by cjh4l22: Sep 26, 2011 - 2:17 AM

you are missing the most important part of the disc

offset, the offset is critical, too deep and it'll rub against your ball joint during cornering, not deep enough and it wont line up with the caliper, which you can solve by shaving some from the caliper mounting points to line it up, but go too far and you'll have a problem fitting wheels unless you go with some weird offset like in the 20s lol.

you need to get a set of calipers, bolt them down using stock disc, then take measurements of how far off from the stock disc the caliper's center line is in relation to the center of the disc. that way you'll know what's the " ideal " offset you'll need on the disc, if that number is 57 mm or higher, you'll need to shave off material from the bracket to bring that number down to avoid contact with the ball joint. if it's less than 57 mm, you are golden, all you need to do is find the right disc.

" hint "
there is an Audi disc very close to those specs you posted, but can't remember the offset on it.

dude dont fall on the negativity some members have on this site.

I found my 2 piston set up after looking a lot.

Why do you want to upgrade, just say for the hell of it and because i have the money. Thats my answer to everything now. That makes more sense now a days than a technical explanation.

Are u going to track it, who cares, you may just want to swao the brakes so that after yo take a piss on them, lol, well then just do it...

I have the trd calipers i bought and soon to install them, i bought new oem gt4 rotors from a source on ebay.

http://www.ebay.co.uk/sch/tigerlily2712/m....sid=p4340.l2562

he sold them to me. but i dont think he has any at this time....

Didn't we resolve some time ago that 7th gen brakes fit?
(and they offer BBKs for 7th gens)

I think I've found some rotors that are close. They are from a Seat Leon Cupra R
continuing research. possibly buying calipers this week for testing.

if you get this all installed, i'm curious to findout if you're going to be replacing your proportional valve with an adjustable one..

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I want to do this, but I need somewhere where I can safely tune it, unless we can tune this to maximise the usage of front and rear brakes / tires, is a useless mod and is not something you want to street tune.

i'd be glad to figure out the proper proportioning bias (in terms of fluid pressure ratio from front vs rear) but would need to know some specs on the upgraded brake system & current brake system. would need things like the number of pistons per caliper, diameter of pistons, center to center distance from hub to pistons, etc.

I can get all those specs, but still I would like a " safe " environment when to do the real life test of the theoretical numbers.

I will post the numbers on my GT4 brake thread so they are not confused with the numbers for the 4runner brakes.

Sounds good so far. Im trying to get the calipers too. As soon i get then ill start to measure everything.

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This is so full of wrong, I don't know where to start....

lets see...

a GT4 has 4 pot aluminum calipers... a car that weighs 1000 lbs more with drastically different rear brakes, weight balance, vehicle dynamic, et all... 10:1 those calipers are either part of the homogilation rules of rally at the time or a very shiny touch to a very expensive car...

This makes perfect sense to swap into your econo box with extra HP

What happens the first time you you slam on your brakes in a turn in the rain and you go ass first into a guard rail because your rear lifted and you lost traction? Or what happens when you try to stop because some jack ass stopped in front of you, and the nose of your car dives under his bumper? What about that master cylinder? Is it the same? What about your rear discs and calipers? Are they going to corrode and seize because they hardly actuate?

No one on this forum wants to have a serious discussion about brakes, no one talks about upgrading to SS brake lines, bleeding the system correctly, pad and rotor combination, intelligent bias adjustment discussion - et all. Now if you want to have the discussion that the single pot calipers are twisting under load and creating uneven pad wear, something I am starting to deal with, then we can have a caliper upgrade discussion. But I'd be willing to bet that the GT calipers would perform better than you expect with the extra HP after some minor massaging and high quality pads and rotors... after all late model ST165s and ST185s also were sold with single pot calipers.

You want to be a baller and drop 4 pots on the front of your car and stop fast in straight line, be my guest. But don't call it a brake upgrade.

This post has been edited by qatar11: Sep 26, 2011 - 10:36 PM

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I'm speechless to this comment... a potentially unsafe change to a car that could very much be a determinant and not an upgrade and we should all get in line and scream from the roof tops, "Eff that guy, you got the money, go for it"

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Ok thanks ill keep that in mind. if anyone gets more info about this nice 4 piston BRAKE UPGRATE post it here please.

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If its unsafe we wont use it. Simple as that. Thats why some people here want to get them and test them first. Im and not planning to install them and run at 100mph and hit the brakes and see if they work or not. If im doing this i will Test it, test it and test it over and over again till i am 120% sure they work fine.

its about getting the big brake kit set up properly

This post has been edited by BonzaiCelica: Sep 27, 2011 - 2:56 AM

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Are you serious? why do you think its considered a brake upgrade when cars like STI's, EVO's, Porsche's, Ferrari's, etc... have multi-pot caliper brakes? as far as braking faster, its still to your advantage. its always been considered an advantage to stop sooner, as far as ending up under someones backend... Who cares? better than smashing into it evenly, and if you're in a lowered car its likely you're gonna end up under it anyway! furthermore, front brakes do the majority of your braking anyway, so as far as going ass first into a guard-rail; you've got much bigger problems if the backend of your FWD, Front Engine car, with a ~60/40 front/rear weight ratio... is sliding ass first into a guard rail. your information about seizing brake calipers and master cylinders has no logical reasoning. why wouldn't your current rear brakes have that problem? they don't do the majority of the stopping in a fwd car, or any car, for that matter. most master cylinders have more than enough ability to crush any set of current day rotors and are the same ones used in gt4's and in some (much heavier) toyota camrys, so why wouldn't it work? oh, and late model ST165's and ST185's single pot brakes... did you not notice what they got replaced by? multi-piston brakes. yea, I'd say the manufacturers had a pretty good reason for that IF they've been doing it with everyone of their sports car since 1993. (ie. - supra, gt4, 3000gt, stealth tt, evo, eclipse, corvette, mustang... need i continue?) So yes sir, it IS most definitely a flipping upgrade!!

So, in short... If you prefer taking more time and distance to stop when its necessary... and feel like smashing into someone, then by allllll means sir. enjoy. we will send you a card while you and you're passenger are in the hospital. good day.

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Yes, I am - the brakes are the most important system on your car - the effects of modify the brakes will greatly alter the characteristics of the car above and beyond any other change.

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It's not - It's called stock, i.e. a caliper specifically selected for that car

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No one is questioning the straight line stopping advantage of larger brakes (which is the end result of those 4Runner 4 pots, 4 pots in general will not guarantee greater stopping force for the same size caliper) A 1" lower is not a 3" dive under the bumper of a F150 instead of crashing into it... I would care when I have a greater chance of kissing the rear end of that truck with my teeth.


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Yes, they do... but the weight shift to the front could be far worse and unpredictable with that caliper change and a poor balance tune.. My comment about be ass forward was a potential result... as opposed to recovering from that situation


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I don't know why it would not work. It is simply a concern and cannot be ignored when upgrading the brakes... It's a system, and you must think systematically.

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Sure, its an upgrade... it was also a designed change, made in the context of the rest of the vehicle's brake system

You mentioned a host of cars, which are grossly out of context price and performance point wise, but my point can still be proven, I googled with zero follow up or scientific rigor:

Car / Weight / Wheel Size
4Runner ~ 3,700 lbs, ????
Celica ~2,580 lbs, ????
GT4 ~ ~ 3,174 lbs, 16x7"?
STI's ~3,296 lbs, 17x8.5"?
EVO's ~ 3,285 lbs, 17x8?
Supra ~ 3,417 lbs, 16x9
3000GT (We'll assume VR4) ~ 3,800 lbs, 18x?
Corvette ~ 3,180 lbs (17x8.5F, 18x9.5)
Mustang ~ 3,603 lbs (18x8.0) -> 19x9.0

I'll skip the ferrari's and porsche's as they are a bit out of the scope of the discussion.

These cars all demonstrate a convincing need for the brakes selected for the car... to a car, they are all well over 500 lbs heaiver and significantly more powerful, even with the 3SGTE swap. They also have larger and wider tires to give you a larger contact patch to use those brakes....In addition, these cars are all halo cars to their respective brands, many of them the bench mark for stock car 'Ring runs, et all...

You guys are all right... you drop those 4Runner calipers on, and your 100-0 stopping times will be greatly improved, probably markedly... but at what cost? a bias valve is not a Jesus buttom, its not going solve all the system issues. In the end, people talk all the time about upgrading the calipers, and no one here talks about what it means to add 5-10 lbs of unsprung rotor weight out on the corner of the car like that, what will that do for acceleration, are the brakes the limiting factor? or is it the tires? the pads? worn out shocks and struts? what happens to handling, etc?

I want to have a tecnhical discussion about it, and it just turns into a flame war, how dare you question my plans, you hate america, blah blah blah - so whatever. you have the means and the way.


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Any question wrt your class is nicely summed up here... Is this how you end all technical discussion?

My only contribution- and I intend to start no argument with anybody here- is that your braking capabilities are limited only to what your tires can handle. Personally, I've found my GT calipers to be capable of locking up the wheels, no matter which tires I've had, so any caliper upgrade is completely unnecessary.

that's a good point, unless the OP is looking to increase the sensitivity of his car's braking force relative to pedal force because let's be honest, compared to most cars the celica has very low sensitivity.

instead of arguing and pulling each other's rope in opposite direction, we should use everything we know as a group to develop the cars capabilities not to stop development.


the advantage of bigger pads / more piston are plenty

more even and consistent brake force with less brake fade with excessive use like on twisted roads or road racing.

the real disadvantage is only cost.

the rest of the disadvantage that can be mention will all be self inflicted due to poor ) or total lack of ) tuning.

qatar will always have a different point of view than most here, because he focus his approach purely on functionality ( which is a great thing ) but I think instead of criticizing and putting down the humble efforts of an upgrade from fellow members who are not as experience as you in proper car modifications, you should instruct and pass on your acknowledge, that how we'll grow and get better as a community.

I agree with everything you have said, and I have been looking for a safe area where I can tune my brake proportioning valve ( not installed yet ) also to help keep brake bias as intended by Toyota I'm installing GT4 brake disc as well, along with stock gt4 brake proportioning valve ( installed already )

as soon as I find a safe environment where I can safely tune my brake proportioning valve I will tune my brake system to maximize braking force while staying on the safe side of things.

engine power is not really a reason to upgrade brakes ,I decided to upgrade my brake while I still had my 7a, why ? brake fade.

I play softball on the company's team, to get to some of the fields I go through some back roads, freshly paved, with no much traffic at all, of beautiful country side roads, by the end of some of them I had to start braking wayy earlier because my pads / disc will be so hot they wouldnt grip as they do when cold, I first upgrade to 7th gen bigger disc, TRD pads and stainless steel lines and DOT4 brake fluid, while this helped a lot, I was still not happy with the inconsistency of my brakes by the end of those runs.

we can only try to guide others on how to do things properly, there will always be someone who will blow his engine, mess his brakes, create sparks while dragging the frame because he lowered the car too much, break his back due to cheap racing seats etc etc, we should warn members of unsafe WAYS of mod'ing a car, not tell them to completely stop modifying, there are always ways of properly doing things and that's what we should pursuit.

as far as locking up tires, ANY brake system will do that, locking up tires doesnt mean a brake system is capable. it just means you locked up the tires.

when does a stock celica lock up the front tires ? just before the rears ? way ahead of the rears ? this is the whole point of tuning brake system, is not for everyone, but there is a huge benefit when done properly.

for those out there who just plainly want the bling bling factor of " brembo " calipers showing up wihtout bothering with the proper way of doing this, the safest way of achieving that is buying a set of those plastic caliper covers, is just like wanting a turbo sound without doing a proper setup, only safe way is one of those turbo whistle things welded on your tail pipe.

let's all be friends again and correct each other on our mistakes and pull all in the same direction of proper development.

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I'm with qatar on that perspective as well. Function. Ya I did criticize as well without properly explaining myself.

You said getting the proportioning valve from a gt4, but how about the brake master cylinder. is that necessary also. How would you maximize braking efficiency with a stock proportioning valve. Which one of the two is based off the weight of the vehicle????