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Aluminum Brake Pistons

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Old Mar 9, 2018, 11:17 AM
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Aluminum Brake Pistons
Does anyone know where we can obtain the aluminium brake pistons when rebuilding the front calipers on the 2006 Evo MR?
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Old Mar 9, 2018, 12:20 PM
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Haven't seen AL ones but there are Stainless ones you can buy
https://www.racingbrake.com/Stainles...r-p/bm-21p.htm
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Old Mar 9, 2018, 08:07 PM
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Thanks - I was looking at those, but was wondering why the OEM used aluminum. Is there some advantage to aluminum pistons?
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Old Mar 10, 2018, 10:16 AM
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Les expensive to produce most likely. The stainless pistons are an upgrade.
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Old Mar 10, 2018, 04:10 PM
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Can you use the same rubber and seal kits as used for the OEM aluminum, or do you have to use a kit specific to the stainless pistons?
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Old Mar 13, 2018, 10:07 AM
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Idk. But the seal kits Racing brake sells are way less expensive than OEM anyways. And they work fine.
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Old Mar 19, 2018, 09:56 AM
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Stainless has much lower thermal conductivity than Aluminum, on the order of 8x. So in brakes, it seems to make sense to keep temps away from fluid.
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