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Old 12-05-2023, 05:47 PM   #71
Lynxis
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Very helpful. What pads are you running in the rear ?
I'm running matching rear pads in OEM caliper.
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Old 12-10-2023, 04:17 AM   #72
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Very helpful. What pads are you running in the rear ?
Also, my mistake, I wrote down that I'm on C21 but this is incorrect, I'm using the CSG CP compound which is basically their general purpose/dual duty pad.
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Old 12-10-2023, 04:56 AM   #73
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Originally Posted by Lynxis View Post
Also, my mistake, I wrote down that I'm on C21 but this is incorrect, I'm using the CSG CP compound which is basically their general purpose/dual duty pad.
C21 front with cp rears

Or

Cp all around

Thanks for updating
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Old 12-10-2023, 06:31 PM   #74
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C21 front with cp rears

Or

Cp all around

Thanks for updating
CP all around.
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Old 12-11-2023, 05:32 PM   #75
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Originally Posted by autoracer86 View Post
C21 front with cp rears

Or

Cp all around

Thanks for updating
CP all around.

C21 front with BM4 and CP rear would result in terrible bias!
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Old 05-30-2024, 05:32 PM   #76
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Does anyone have replacement rotor part numbers for this kit?
Are the rotors the same dimensionally to the BRZ PP rotors?
I'm trying to get an idea of long term cost.

TIA
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Old 06-01-2024, 10:52 PM   #77
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I'm not sure of the specific part number but CSG has confirmed to me previously that this kit uses PP rotors.
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Old 06-02-2024, 03:39 PM   #78
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Originally Posted by Lynxis View Post
I'm not sure of the specific part number but CSG has confirmed to me previously that this kit uses PP rotors.
That was my suspicion, thanks.
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Old 07-01-2024, 08:16 PM   #79
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Can I assume the BM4 doesn't have dust boots and therefore wouldn't be ideal for street use?
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Old 07-02-2024, 04:35 PM   #80
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Can I assume the BM4 doesn't have dust boots and therefore wouldn't be ideal for street use?
The BM4 calipers have dust boots.
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Old 07-02-2024, 08:35 PM   #81
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Can I assume the BM4 doesn't have dust boots and therefore wouldn't be ideal for street use?
The caliper does have outer dust boots and is designed for mixed use.
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Old 07-18-2024, 09:45 PM   #82
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Originally Posted by redlined600 View Post
Does anyone have replacement rotor part numbers for this kit?
Are the rotors the same dimensionally to the BRZ PP rotors?
I'm trying to get an idea of long term cost.

TIA
If you want the Brembo zinc coated slotted rotors that come with the kit, they run in at $330 each. These are what are listed on the BOM of my GT Kit, though I'm sure the BM4 uses the same:
  • LEFT: 19.7812.51
  • RIGHT: 19.7812.61
I don't have the part number for the drilled rotors handy, but I'm sure they cost about the same.

They're not easy to find, probably have to contact and order through a Brembo distributor:

Finally, I don't know what kind of Brembo rotor CSG used to offer with their CSG-spec kit (i.e., the Blank unfeatured one). They've never provided a clear answer on it, but it's probably a Brembo sourced rotor. Perhaps it's the same as the OEM Brembo PP rotor.
  • It seems that now they option all of their kits with the standard-kit Brembo drilled or slotted zinc plated rotors

----

In any case, the calipers should also take replacement 326mm rotors common to the PP caliper (which is the same ones WRX STi use); just make sure they come in the right bolt pattern.
  • OEM is pretty expensive, running in around $300-$400 ea as well (as they are also Genuine Brembo rotors).
  • Centric is what most people end up getting for affordable replacements (coming in around $130 ea)

Last edited by EndlessAzure; 07-18-2024 at 10:05 PM.
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