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Discussion Starter · #1 ·
When you try to buy Brembo or StopTech for instance, they're all specialized for certain vehicles. Same with rims/wheels but I understand that to a degree because there are different bolt patterns.

Ok so for brakes, it just seems like simple logic. Make sure the brake callipers fit on the rotors and the rotors fit on the wheel hub then make sure they clear the wheel diameter. Voila!

Reality is quite different. No Brembo for our car, no StopTech. I see VW GTIs put on aftermarket Brembos, STI come standard with Brembo, hell, even GTI guys are running Porsche 911 brakes.


What the hell? Why can't we do that?
 

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Hell, I had Porsche 4-pot monoblock callipers and pads, with Turbo rotors on my '94 WRX :D Plus people have been taking the brembo's, front and rear, from STI's and fitting them to WRX models.

Hmm, here's a thought. AP Racing used to have a template you could download, print out, and pop onto stiff card and see if the calliper / rotor would fit your setup before you purchased the kit. Not sure if they still do that.

For the brembo solution, specifically the rear 2-pots on classic WRX's I know someone who got a local engineering firm to fab up a bracket to fit them, and for my Porsche setup I needed to run spacers to give the correct width / offset, plus there was a special bracket that bolted up to the original caliper mounting position to get it in the right spot.

Perhaps that's all there is too it, needing a bracket made up, plus the correct offset / sized wheels to clear. Thing is, there's the cost involved in getting the bracket, and I suspect the big firms don't see the return in doing that yet.

What would be great is if someone had the required callipers, and either had the skills, or knew someone who had them, that could knock up a bracket. Perhaps even 3D print it, just for clearance and fitting purposes (not sure 3D printed stuff would cope with stress and heat? no idea what materials you can use these days) and then if it works, get it properly fabricated from something (aluminium?)
 

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You can do anything if it's designed right.

If there were enough demand I'd like to build a BBK. Hardest part is getting the caliper mounted correctly, and that's fairly easy lol :)
 

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Hyundai Genesis sedan . Playingwithmymind mentioned that the brakes fit on the front . Kdm motors sells this kit as an upgrade for the koup. Brembo has a kit for the same platform so it should be transferable over to the forte's . For years companies have made custom kits and brembo sells a caliper that basically just needs an adapter . That's how tons of people have been using porche Spyder brakes for years now . First on VW's then later on wrx's they are unbelievably expensive to get a new kit that's why the porche is the cheapest options long with sti or other cats that have upgrade brembos . Neo tech makes a big brake kit for our cars too . Searching South Korea speed shops and aftermarket companies a lot of this has been done now for the k3 tgdi koup
 

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Hyundai Genesis sedan . Playingwithmymind mentioned that the brakes fit on the front . Kdm motors sells this kit as an upgrade for the koup. Brembo has a kit for the same platform so it should be transferable over to the forte's . For years companies have made custom kits and brembo sells a caliper that basically just needs an adapter . That's how tons of people have been using porche Spyder brakes for years now . First on VW's then later on wrx's they are unbelievably expensive to get a new kit that's why the porche is the cheapest options long with sti or other cats that have upgrade brembos . Neo tech makes a big brake kit for our cars too . Searching South Korea speed shops and aftermarket companies a lot of this has been done now for the k3 tgdi koup
I didn't say direct fit or the rotors and calipers I have would be bolted on. Rotors are 330 mm with 9 mm more hat than the Forte has, lug pattern, hub bore, thickness and hat diameter are all right on the money. Yes the caliper will need a bracket to mount up and that is what I have been looking for, the stock caliper bracket off the Genesis sedan 3.8L. $150 for rotors (stock), $240 for both calipers (stock 4 piston) and a set of pads, brackets and stainless lines with a total of under $500 for a BBK would be awesome.

@6th, maybe I should bring what I have when I come up for you to look at.
 

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glazed rotors are where its at bra
 
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Once there's more demand and more of these cars on the road, it should be easier. As a former VW owner, there was lots of support as well as experimentation. My 2001 Passat GLX only had 11.3" front rotors - half inch SMALLER than a Forte SX. A little experimentation found that using a TT Quattro caliper bracket and bolts, the 12.3" rotor from the 99-01 A8 would fit. A short time later, someone turned me on to a group - B.I.R.A. I think it was. Brake Improvement Research Association I think. I don't know if it still exists or remember if they played with anything but VW/Audi products, but I found brackets - a nice aircraft grade aluminum block - that allowed the use of Porsche Boxter calipers over those 12.3" rotors. Bought them used from one of the members for $100 and a used set of Boxter calipers for $200 and a set of S/S lines. Amazing difference. A year or so later, BBK's were everywhere.
 

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Discussion Starter · #9 ·
Once there's more demand and more of these cars on the road, it should be easier. As a former VW owner, there was lots of support as well as experimentation. My 2001 Passat GLX only had 11.3" front rotors - half inch SMALLER than a Forte SX. A little experimentation found that using a TT Quattro caliper bracket and bolts, the 12.3" rotor from the 99-01 A8 would fit. A short time later, someone turned me on to a group - B.I.R.A. I think it was. Brake Improvement Research Association I think. I don't know if it still exists or remember if they played with anything but VW/Audi products, but I found brackets - a nice aircraft grade aluminum block - that allowed the use of Porsche Boxter calipers over those 12.3" rotors. Bought them used from one of the members for $100 and a used set of Boxter calipers for $200 and a set of S/S lines. Amazing difference. A year or so later, BBK's were everywhere.
You're talking about VW where they have a loyal following and a lineage that dates to to the 70s when they invented the hot hatch segment. Hyundai/Kia just started making decent cars -5 years ago.

How do you like the Drag wheels? I'm thinking of getting some XXRs but some of the Drag selections aren't bad.
 

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You're talking about VW where they have a loyal following and a lineage that dates to to the 70s when they invented the hot hatch segment. Hyundai/Kia just started making decent cars -5 years ago.

How do you like the Drag wheels? I'm thinking of getting some XXRs but some of the Drag selections aren't bad.
Agreed with VW. My first new car was my 85 GTI. Didn't do much to it. I bought my sister's 86 Jetta Coupe from her in 1997. By 2000, it had half the Neuspeed catalog on it, springs, sway bars, upgraded brakes,etc. I was just short of doing a 1.8T swap. As years went by and as a former VW and Audi service advisor, reliability issues steer me away. I'd love a Golf R, or even a 5 door GTI performance pack. They are more touchy feely and really do "drive" nicer, but the history of reliability in the last decade as well as short warranty keep me away from VW. As for the wheels, no complaints. We like them a lot.


 

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Well the most important thing is you cant just slap any caliper and rotor onto a car, you need to make sure the bias would actually increase performance and that the master cyl is up to the task of moving the required fluid for the new calipers.

The cheapest option in fixed calipers would be nissan 300zx twin turbo 4 pot calipers. These are the same calipers that are found on 4pot equipped WRX's and use the same pad as an STI so you would have an endless supply of pad compounds, but the mounting tabs are in a diff location and substantially cheaper. However if the master cylinder is not up to the task of moving enough fluid for a larger caliper your stopping distance will be much longer then if you simply put some good pads like stop teck or carbotechs on.

If you guys are serious about wanting to look into 4pot fixed caliper options send an email to https://www.knsbrakes.com IIRC his name is John and he created a bracket to use z32TT aluminum calipers on 02-07 WRX's useing a legacy GT rotor, these calipers use the same pads as the STI brembo's at a fraction of the price and a rotor nearly just as large (larger rotors give you more braking TQ and more surface area to soak up heat, this combats fade) He may be able to help.
 

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Discussion Starter · #14 ·
iraceautosports.com

They are official Wilwood carriers and said they can custom make a kit for our cars.


I bought some BC Racing coilovers from them and they seem to do some research into whether parts work or not on our cars and they do have a bit of racing background so I'm sure they know what they're doing.

https://www.iraceautosports.com/pro...t-big-brake-kit-99-07-subaru-impreza-wrx-sti/


Do you guys know if there are any adverse consequences of putting all the stopping power in the front and leaving the rear stock? Will the car spin out in a full stomp emergency stop scenario?
 
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