Set of 8 Speed Pro Chrysler/Dodge/Plymouth 440 Powerforged Pistons+Moly Rings
About Speed Pro street series power forged pistons:
Higher compression, longer life.These Power Forged pistons from Speed-Pro are designed to fit tight, thanks to a special aluminum alloy that doesn't expand as much as other alloys. They'll provide the stability and ring control you need, plus the strength you want. Speed-Pro pistons also feature ribbed skirts for better oil retention, and even included new wrist pins!
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