Caliper piston material

[rockola1971]

*that would be me, heavy foot guy. I don't even know anyone else that has as heavy of a foot as m

Or you're towing down hill in Colorado. Im just saying, that is the reason brake calipers come with phenolic pistons.

Actually you are incorrect. The reason they come with phenolic pistons is because of the all mighty dollar. They are cheaper than machining metal ones.