This is a very popular upgrade for 356 and 912 models and our best selling Pistons and Cylinders set. Cylinders are casting iron and pistons are casting aluminum. 86mm Big Bore; CR 8.5:1.

Fits 1965-1969 Porsche 912 ;1950-1954 Porsche 356 ;1955-1959 Porsche 356A ;1960-1963 Porsche 356B ;1964-1965 Porsche 356C