EBC Ultimax BlackDash USR Slotted Rotors (gauging interest)

[SubaruGenuineParts]

These are fairly new from EBC
and I will personally be doing some testing and reviews

has anyone else tested these just yet?


If all goes well (and I'm sure it will!) - we will eventually retailing the item in our store


It is well known that I am a long time fan of EBC brakes and expect no less than superior quality from their rotors as well.




FROM WWW.EBCBRAKES.COM

Ultra quiet sport slotted brake rotors

Manufactured using premium disc blanks, the narrower multi slot design of the Ultimax sport rotor and the progressive angle at which the slots are machined creates a quiet running sport rotor that still has benefits of removing gas, dirt, water and debris and MAINTAINING parallel pad wear. EBC have always been honest enough to say that the biggest advantage of slotted rotors is the fact that they promote flat and parallel pad wear rather than allowing ridges to develop on pads and rotors which is typical of "drilled only" sport rotors. By preventing these ridges brakes stay more consistent throughout pad and rotor wear life (simple physics!).

Do these look as though they would be something "you" might be interested in?

What are you looking for in a rotor?
performance? longevity? quality? function?


We need to consider the market before diving in.

Your feedback and input is requested
thank you

Jamie Thomas
email---> Jamie at chaplins dot com
www.subarugenuineparts.com
Be sure to check our iTrader feedback!
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[ButtDyno]

What are you looking for in a rotor?
performance? longevity? quality? function?

cheap, fits

[SubaruGenuineParts]

cost and "fit".... NOTED!!


of course those matter to me too!



Jamie Thomas
email---> Jamie at chaplins dot com
www.subarugenuineparts.com
Be sure to check our iTrader feedback!
Yes....We Take Subaru Bucks!

[nhat]

weight?

how do they compare to those that are already on the market? dba? stoptech? powerslot? etc!

[Subie Gal]

Originally Posted by nhat

weight?

how do they compare to those that are already on the market? dba? stoptech? powerslot? etc!

those questions will be answered as soon as I do my test and review

Jamie

[jamal]

Yeah if they were a little bit plus-sized like the DBA 4000 and priced the same or less it would be good.

Speaking of the 4000 what advantage would these have over them or other non-oem options?

Are they straight vaned or directional?

[SubaruGenuineParts]

good questions

does anyone have a link to a details DBA 4000 review?

I have DBA slotted rotors on my daily driver at the moment
not remembering the spec, but I am less than impressed with them

They seem to tear at the pad material - I can literally feel it.

Jamie Thomas
email---> Jamie at chaplins dot com
www.subarugenuineparts.com
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[jamal]

Maybe it's your pads

The 4000 is 295x25.4mm instead of the standard 294x24mm. It also has their fancy kangaroo paw vane system. I think you can also get them without slots.

spec sheet

Anyway I don't see how one slotted rotor is going to be any nicer to pads than another.

[SubaruGenuineParts]

ahaha it is not the pads..... that I can guarantee

and thank you for the link

EBC Claims their rotors maintain parallel pad wear

I'm fairly certain the slotted DBA's I am running currently are not wearing my pads evenly




Any other info / requests for data from anyone?

Jamie Thomas
email---> Jamie at chaplins dot com
www.subarugenuineparts.com
Be sure to check our iTrader feedback!
Yes....We Take Subaru Bucks!

[nhat]

which pads are you running btw?

i'll have to watch my pads for uneven wear since i've got a set of dba4000s installed as well! could you tell me what i should be specifically looking for?

[Subie Gal]

Of course I run EBC Redstuff's on my daily driver

Pad depth is good, I have not removed the pads for inspection
but feel that "shimmy" under braking that can be indicative of "warped" rotors - or uneven pad deposits

Seems a bit silly if that's the case as I have less than 10k miles on these rotors
No race time
No track time

I will inspect everything carefully when I swap out the pads/rotors for the EBC rotors

Jamie

[bushflyr]

Originally Posted by ButtDyno

cheap, fits

Yep. OE works great for me, so cheaper than stock would be the big plus. My pads wear evenly anyway and I just toss my rotors every 2 sets of pads so.... EBC reds too, BTW.

[fastnoypi]

if these are 2 piece, do they have an application to fit Stoptech ST-40 front BBK? looking for some other rotor options. Also open to 1 piece if they fit. 328x28

[Ernest]

I have these on my car for the last 5K- started out fine, but now I have a little vibration (like warped rotor or you can feel the slots). My previous OEM rotors warped at about 38K and that vibration was far worse than this. I would say they are not a bad replacement for OEM if you want slots. Don't really know if the performance is any better on a DD. Looks better than it performs. I will be putting stainless brake lines on in April when I switch to my summer tires. At that time I will take a closer look at the pads and rotors.

[ESmooth]

Originally Posted by fastnoypi

if these are 2 piece, do they have an application to fit Stoptech ST-40 front BBK? looking for some other rotor options. Also open to 1 piece if they fit. 328x28

These will not fit your StopTech kit.

[jamal]

Originally Posted by SubaruGenuineParts

ahaha it is not the pads..... that I can guarantee

and thank you for the link

EBC Claims their rotors maintain parallel pad wear

I'm fairly certain the slotted DBA's I am running currently are not wearing my pads evenly

I guess they mean reduced grooving in the rotors but then they say it's only a problem with drilled rotors anyway.

Any 1-piece rotor is going to taper in at the top at high temps, which causes what I would consider "non-parallel wear."


Oh and here's the warped brake myth paper that a few people in here should read:
http://www.stoptech.com/tech_info/wp...rakedisk.shtml

[SubaruGenuineParts]

Originally Posted by Ernest

I have these on my car for the last 5K- started out fine, but now I have a little vibration (like warped rotor or you can feel the slots). My previous OEM rotors warped at about 38K and that vibration was far worse than this. I would say they are not a bad replacement for OEM if you want slots. Don't really know if the performance is any better on a DD. Looks better than it performs. I will be putting stainless brake lines on in April when I switch to my summer tires. At that time I will take a closer look at the pads and rotors.

Excellent, thank you for your feedback and input

Your time is much appreciated!

Jamie Thomas
email---> Jamie at chaplins dot com
www.subarugenuineparts.com
Be sure to check our iTrader feedback!
Yes....We Take Subaru Bucks!

[SubaruGenuineParts]

I have more information direct from the Owner of EBC in the UK

We have two designs, the GD slotted and the USR slotted.



The grooves or slots are merely alternate cosmetic adjustment on a plain
rotor that is made with what we call a PILLAR design which means the rotor
has numerous columns between the rotor faces rather than simple vanes in
lower cost discs.



A Pillar disc should resist distortion better.

EBC now make their own rotor blanks in their foundry in the UK and these are
a quality part using a unique disc-alloy iron that I spoke about previously.





The rotor sizes are standard at 294 mm dia x 24 thickness.

If you make these rotors thicker you will not get maximum pad thickness in
there so the 25.4 mm thickness is a no go.





The GD series have wider slots that run right across the pad surface and
carry more air under the pad and therefore run cooler. The UK Police Force
Chase cars use this design and with the yellow pads say its the best set up
they have tested.Downside of this design is slight whirring noise under
heavy braking.





The USR series have two separate slots and cool the pads to a lesser extent
but run very quietly.




The benefit of slots of any kind compared to rotors that are only drilled
or dimpled is that as the pad wears it wears very flat and smooth and does
not develop ridges as common with non slotted or through drilled rotors.
This record groove effect imbalances pad performance as there is never a
true flat surface for the pad to work against


These are not an oversize rotor, just a quality OEM size direct replacement
that unlike most other rotors is NOT made in China.

Some really good info there from Andy Freeman, owner of EBC Brakes

I'm really looking forward to doing some testing!!!

[bushflyr]

Ballpark $? Little more than OE? Lot more than OE? Same or cheaper?

[nhat]

cheaper than dba?

[Subie Gal]

no $ ballpark just yet... but EBC always has reasonable pricing

[RedImpreza07]

I have the USR slotted $167 shipped for the front pair. EBC reds and they work fine so far as a set. Here is a link to my review
http://xsorbit27.com/users5/subarutu...p?topic=5469.0

[SubaruGenuineParts]

Thanks for the post but the link requires registration

I will have my own review up soon enough

[RedImpreza07]

Well here we are again with some brake product reviews on both the 07 Impreza and & 01 Forester
The end results are awesome. I can stop my Impreza from 60 to 0 in under 120 ft with snow tires on.
Fitment is Great. and I found out that the 01 Forester and My 07 Impreza use the same rotors. 10.9"
The Forester had 90k on the rotors and needed new ones as they wabbled so I swapped my Impreza rotors on to her car with new EBC Reds. Thing stops SOOOO much better and no more wabble. This justified putting the New EBC slotted Sport rotors on my car with new EBC Reds front and rear.
Here are the part numbers and what they fit from what I can find.

EBC Reds Front DP31134
Forester 1998-2002

EBC Reds Front DP31661C
WRX 2003-2005
Impreza 2003-2007
Forester 2003-2007

EBC Reds Rear DP31687C
WRX 2003-2005
Impreza 2003-2007

EBC Ultimax Rotor (Slotted) Rotor Set # USR729

Impreza 2003-2007
Forester 2001-2002 and maybe older ones but not sure

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[Subie Gal]

FYI I just installed these yesterday and will be doing some testing shortly

(snowing!!! right now....)
rears


fronts


fresh pads in both front/rear




more info on install and photos/writeup coming soon!

Jamie