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Old 09-22-2009, 04:12 AM   #1
ejpowerguy
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Default 4pot rotors same as wrx slider caliper rotors?

nevermind... found the answer finally after digging
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Last edited by ejpowerguy; 09-22-2009 at 05:08 AM.
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Old 09-22-2009, 08:11 PM   #2
Uncle Scotty
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maybe

the dba 4000 series says NO....most everybody else, YES
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Old 09-23-2009, 02:59 AM   #3
CharT
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The way I understand it, DBA 5000 series has two versions with different aluminum hat designs but I think both use the same rotor. On the original 4-pot version, the hat interferes with the 2-pot sliding calipers or caliper bracket, don't remember which. The newer version designed for the 2-pots will also work with the 4-pots.

Last edited by CharT; 09-23-2009 at 05:38 PM. Reason: Changed 4000 to 5000.
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Old 09-23-2009, 12:10 PM   #4
kumanchu
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DBA makes their rotors a little thicker than factory spec, and causes clearance issues with the 4 pots.

A factory spec WRX front rotor will fit the 4-pot calipers.
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Old 09-23-2009, 03:49 PM   #5
Uncle Scotty
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Quote:
Originally Posted by CharT View Post
The way I understand it, DBA 4000 series has two versions with different aluminum hat designs
FULL STOP

THE DBA 4000 SERIES IS A CAST IRON ONE PIECE ROTOR AND HAS NO ALUMINUM OF ANY SORT IN ITS CONSTRUCTION

THEREFORE THE WHOLE POST IS JIBBERISH AND SHOULD BE EDITED TO DELETE MISINFORMATION
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Old 09-23-2009, 03:52 PM   #6
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Quote:
Originally Posted by kumanchu View Post
DBA makes their rotors a little thicker than factory spec, and causes clearance issues with the 4 pots.

A factory spec WRX front rotor will fit the 4-pot calipers.
THERE ARE 3 PART NUMBERS ASSOCIATED WITH THE 4000 SERIES ROTORS THAT FIT EITHER THE SLIDING CALIPERS OR THE FIXED 4 POTS

BEWARE ORDERING THE CORRECT ONES
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Old 09-23-2009, 04:23 PM   #7
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DATA

DBA 1 piece:

Standard series - p/n 650 - fits 2 or 4 piston WRX w/294mm rotor

4000 series - p/n 4650 - Again fits all 2 or 4 piston 'WRX' applications. However - some street pads w/ shims on them may not fit w/ the shim as the rotor is intentionally a bit thicker to add heat mass. Take shims off - run a few weeks - if it gets noisy wait till they can fit.

p/n 4000 - Original 4000 series rotor w/ tapered HAT section to clear OUTBOARD ABS tone ring. This ABS system is all pre-2000 MY afaik.

5000 series:

p/n 5000 -the OG - fits 4 pot WRX (pre-USDM 2 pot)

p/n 5010 - fits 2 pot OR 4 pot front WRX calipers. This rotor was made when it was realized that the caliper bracket from the USDM WRX hit the rotor hardware on p/n 5000. Thus 5010 has a different design- the hardware is recessed for clearance.

Last edited by KNS Brakes; 09-23-2009 at 04:37 PM.
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Old 09-23-2009, 05:01 PM   #8
jamal
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Thanks Ken, added to sticky.
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