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A greater permeability to the heat flow also avoids the danger of overheating of the gasket itself and increases its duration over time
single ring piston
Solid choice for most Morini powered mopeds
High quality Vertex piston features a single ring design and coated dome
allowing a greater quantity of heat to be transmitted from the combustion chamber to the cooling fins and thus
Puch DOS 45mm "70cc" Cylinder and Head Combo hercules A greater permeability to the70cc of good reliable power. For the money, it can't be beat! Aluminum cylinder with nikasil plating. Single ring piston. High compression head for improved performance over the stock head. Comes with cylinder, piston, ring, pin clips, head and gasket kit.
