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Old 02-19-2017, 11:18 PM   #1
KNS Brakes
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Default KNS Brakes prototype Big Brake Kit

So we did a thing.

Caliper - Wilwood 6 piston Forged Superlite - radial mount.

http://www.wilwood.com/Calipers/Cali...emno=120-13235


Pad Shape - 20mm thick Wilwood shape 7420 or similar. Wide annulus versions available.
http://ecat.ferodoracing.com/index.p...FRP3116#detail


Rotor - 325x32 mm DBA rotor ring - non floating.

http://www.knsbrakes.com/c/car-serie...-+Single+Rotor


Hat - Made by TMI at the Ariel plant in South Boston VA

http://www.tmiautotech.com/



STi front rotors should also fit. If wheels clear Brembo's - then these should clear.

The second round of prototypes are due this Friday.

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Last edited by KNS Brakes; 02-22-2017 at 12:18 AM. Reason: Added links
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Old 02-19-2017, 11:41 PM   #2
Crescent1101
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Those are pretty!
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Old 02-20-2017, 02:28 AM   #3
jamal
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What would they offer over the existing wilwood kits?
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Old 02-20-2017, 10:44 AM   #4
mav1c
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More details please. Rotor size? Pad type? What will it fit?
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Old 02-21-2017, 09:49 AM   #5
KNS Brakes
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I added some details
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Old 02-21-2017, 10:01 AM   #6
Chuckable
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Great to see something like this! Like Jamal asked, how are these different than existing Wilwood kits from TCE or RR Racing?
And what's the expected pricing?
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Old 02-21-2017, 10:15 AM   #7
KNS Brakes
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Quote:
Originally Posted by Chuckable View Post
Great to see something like this! Like Jamal asked, how are these different than existing Wilwood kits from TCE or RR Racing?
And what's the expected pricing?
I have not looked at those other kits much.

I think the key features are:

-20mm thick wide annulus pads. In race friction they are only about $200 per set or less depending on the brand.

-Known extremely durable KNS/DBA rotor ring. The one you are looking at is right off my 450WHP C5. C5's destroy brakes like no other.

-Fits where Brembo's do. Still need more confirmation there.

-Will work w/ a stock STi rotor. (The stock rotor is a bit too wide in the friction surface but it will work)

That's all we have for now.
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Old 02-21-2017, 11:36 AM   #8
Chuckable
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Default KNS Brakes prototype Big Brake Kit

Thanks for the reply! Looking forward to hearing on the price.

What are the rotor dimensions?
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Old 02-21-2017, 12:52 PM   #9
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Says right there in post #1

Rotor - 325x32 mm DBA rotor ring
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Old 02-21-2017, 12:56 PM   #10
Chuckable
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Default KNS Brakes prototype Big Brake Kit

Quote:
Originally Posted by Samurai Jack View Post
Says right there in post #1



Rotor - 325x32 mm DBA rotor ring


Doh 🤦 Thanks for correcting me.
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Old 02-21-2017, 01:01 PM   #11
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Nice! Will this kit come with brackets? And is it expected to be more cost effective than STI Brembos?
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Old 02-21-2017, 01:09 PM   #12
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Is the caliper an off the shelf unit or modified?
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Old 02-21-2017, 02:56 PM   #13
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^
I would guess off the shelf with 1.625/1.125/1.125 inch pistons. I happen to have been working on a new brake math spreadsheet and already had this caliper in there. Brake torque would work well for an STi, LGT, or 15+ WRX, but maybe be a little forward biased for an older car.


Being able to use a stock rotor is definitely convenient. Having to safety wire all the bolts on willwood kits a few times has made me want to avoid them. I don't know if you even still have to do that.

Do the custom hat/dba rotors have any float in them
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Old 02-22-2017, 12:19 AM   #14
KNS Brakes
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A few links added on the pad shape and rotors etc.
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Old 02-22-2017, 01:17 AM   #15
Crescent1101
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I want some nice brakes for my Saab
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Old 02-22-2017, 10:13 AM   #16
Chuckable
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Question

KNS, can you comment on the differences between your prototype kit and the one from RR Racing? This time I'm providing a link: http://www.rr-racing.com/Subaru-WRX-...swrxfbk014.htm
Here's a pic of their kit:

They offer different "stages" and it appears to fit FRS/BRZ as well as WRX:


The top of the line RR Racing kit goes for $1895.

I've spoken to you guys over the phone and you've always been super helpful, and with your knowledge of brakes, I'm betting that your system will be better and/or cheaper, so looking forward to learning more details.
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Old 02-23-2017, 10:38 AM   #17
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Quote:
Originally Posted by Chuckable View Post
KNS, can you comment on the differences between your prototype kit and the one from RR Racing? This time I'm providing a link: http://www.rr-racing.com/Subaru-WRX-...swrxfbk014.htm
Here's a pic of their kit:

They offer different "stages" and it appears to fit FRS/BRZ as well as WRX:


The top of the line RR Racing kit goes for $1895.

I've spoken to you guys over the phone and you've always been super helpful, and with your knowledge of brakes, I'm betting that your system will be better and/or cheaper, so looking forward to learning more details.
Wow! That kit is very reasonably priced. Wonder if they're using OEM rotors on the "stage 1 and 2" kits.
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Old 02-23-2017, 01:58 PM   #18
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Yeah, some of the kits use the stock STI rotor, others use a wilwood 328x32 part.
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Old 02-23-2017, 03:11 PM   #19
KNS Brakes
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Quote:
Originally Posted by Chuckable View Post
KNS, can you comment on the differences between your prototype kit and the one from RR Racing? This time I'm providing a link: http://www.rr-racing.com/Subaru-WRX-...swrxfbk014.htm
Here's a pic of their kit:

They offer different "stages" and it appears to fit FRS/BRZ as well as WRX:


The top of the line RR Racing kit goes for $1895.

I've spoken to you guys over the phone and you've always been super helpful, and with your knowledge of brakes, I'm betting that your system will be better and/or cheaper, so looking forward to learning more details.
Front brake kits should fit any Subaru in front. There are a few things to look out for on the knuckle like the blob on sti knuckles and the switch to bolt in bearings but that's pretty minor.

I'd rather let RR's stuff speak for itself. Looks like they have done a good job.

What we have:

DBA rotors - non floating. They are very durable and are solid mounted so you can use them anywhere. Replacement rings w/ hardware are under $200. You would have to murder an NA BRZ to hurt the rotors.

Pads - We will use a wide annulus WW shape in 20 mm thick pads. The pad has a radial depth of 50mm versus 41mm for the "WW" 7420 shape. Cobalt Friction, Carbotech and Ferodo make this shape. The 41mm pads fit as well and those are available from many other pad manufacturer's.

I want it to:

Fit
Not wear out fast
Work well
Be reasonable to maintain.

Retail goal - Still TBD but well under $2k

-Ken
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Old 02-23-2017, 06:54 PM   #20
Charlie-III
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Cool would be if any fit my 98 Legacy GT with 16 x 7" Impreza RS rims....... not likely though.
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Old 02-23-2017, 08:32 PM   #21
KNS Brakes
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Quote:
Originally Posted by Charlie-III View Post
Cool would be if any fit my 98 Legacy GT with 16 x 7" Impreza RS rims....... not likely though.
You need 4 pots/2 pots.

Unless it's not a normal LGT.
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Old 02-23-2017, 08:40 PM   #22
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Yeah the 4-pots are about the biggest brake that will fit under those wheels. Maybe the 299mm ap racing essex kit would with some spacers.

I'd be curious if these would fit under stock 17" sti wheels. Guessing not since they are the wide calipers.
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Old 02-23-2017, 10:01 PM   #23
Chuckable
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Quote:
Originally Posted by KNS Brakes View Post



-Fits where Brembo's do. Still need more confirmation there.

If it ends up fitting where Brembos do then the STI wheels should work.
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Old 02-23-2017, 10:04 PM   #24
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Quote:
Originally Posted by jamal View Post



I'd be curious if these would fit under stock 17" sti wheels. Guessing not since they are the wide calipers.

In one of the first posts Ken says he believes they'll fit where Brembos do, but is waiting on confirmation.
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Old 02-24-2017, 08:22 AM   #25
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Quote:
Originally Posted by Charlie-III View Post
Cool would be if any fit my 98 Legacy GT with 16 x 7" Impreza RS rims....... not likely though.
If these are anything like the Brembos, and it sounds as if they are, then they will not fit using 16" wheels.

Won't fit 7" width either, unless of course you want to use some crazy spacers, which I would never do myself.
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