Has anyone tried this combo or AEM Rotors with the STI Calipers? It seems cheaper than most big brake upgrades I have seen by a few hundred bucks. Thoughts???

 

AEM rotors are oversized and you need to use their bracket that comes with their kit. I dont think you will be able to do it unless you make a special bracket to work with the STI calipers, but you are able to make it work, please let all of us know.

 

As far as know, the STi 4 pot calipers will bolt onto the stock mounting points and use the stock rotors of the WRX. If this is the case then the AEM big rotors with the STi 4pot calipers should work. I was thinking of this one myself.....
-Dave

 

In either case it will work.

All the AEM bracket does is move the current caliper assembly out to accomondate its larger rotor. So if the assembly bolted in the stock location, it will bolt to the AEM bracket and work.

However, two concerns with this kit no matter what caliper you squeeze it with:

a) increasing the rotor diameter without increasing its thicknes equals a bad idea. IIRC, the stock subaru front rotor is really at the limit of thinness at 294x24mm. To take that 24mm up to 340mm in diameter is generally not a good idea on a front rotor.

b) Just moving the caliper outward significantly increases front brake torque. This takes an already front-biased system an overly front-biased sytem. There is a good chance your car will brake worse with this kit than without it. To much pressure on the front tires.

k.