Piston, Forged, Flat Top, 4.360 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford/Mercury, 429, set of 8

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!