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      05-01-2015, 07:08 PM   #2
John_01
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Drives: E90 325i, E82 135i
Join Date: Mar 2009
Location: Sydney, Australia

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I thought it was common sense that Aluminium will transfer more heat than Stainless steel. The stock Phenolic and steel pistons probably have the least heat transfer overall. If the pistons are not damaged, I prefer to keep the stock ones. However I'm interested to know if there is a more durable alternative for the dust boots.
Appreciate 0