Replacing Brake Calipers - OEM Steel Pistons vs. Aftermarket Rebuilds Plastic Pistons for towing?

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storm720

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2000 SLT 4x4 AWD 5.9L w/ Tow Pkg. & higher diff. gears.

Joined Apr 14, 2021

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9 Posts

Discussion starter · #1 · Apr 20, 2021

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I am replacing my front brake calipers on my 2000 D 4x4 5.9L and a bit concerned about plastic caliper pistons that are now pretty standard on rebuilds from most auto retailers.

I know plastic doesn't transfer heat as much as steel, but wonder how durable they are under heavier braking conditions. I tow tournament ski boats and 20 ft. enclosed race trailer. So has anyone had any issues with the newer plastic pistons?

Thanks in advance for your input.

 

Vice-White

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Joined Mar 27, 2021

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6,013 Posts

#2 · Apr 20, 2021

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My SRT10 had phenolic/resin pistons factory and I had no issues with performance braking on a 5klb viper truck!

I do get your concern as it was the same for me when I first saw a plastic intake on Chevy back in the late 80s. But today, everything is plastic so no worries!

 

Tin Foil Hat

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2016 Durango R/T Arizona

Joined Oct 9, 2020

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8,179 Posts

#3 · Apr 20, 2021

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Reminds me of the composite rotors on the Ford Contour. It shocked me that anyone would use composite rotors and angered me that they couldn't be turned and had to be replaced.

 

Vice-White

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Joined Mar 27, 2021

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6,013 Posts

#4 · Apr 20, 2021

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Tin Foil Hat said:

Reminds me of the composite rotors on the Ford Contour. It shocked me that anyone would use composite rotors and angered me that they couldn't be turned and had to be replaced.

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I would not turn most rotors today and with any performance rotor (slotted and or drilled) you cannot turn them either.