86mm Porsche 356C/912 Big Bore Piston & Cast Cylinder Kit 500 VW 412 1973-74 & Porsche

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86mm Porsche 356C/912 Big Bore Piston & Cast Cylinder Kit 500 VW 412 1973-74 & PorscheThis is a new set of Big Bore 86mm Porsche 356 912 pistons and cylinders. It fits Porsche 356; C, SC, 1963 66 &Porsche 912; 1965 and Upwith the 3 piece Case. The Cylinders are cast ironwithGraphiteCoatedHypereutectic pistonswith the 30 Angle, valve pockets, and the 22mm Pin. This kit requires no machine work, when installing in factoryPorsche case & heads Engine size: 1600cc Engine size After Big Bore: 1700cc Stroke: 74mm Cylinders: Cast Iron.