cast-iron cilinder kit ø 57,5 for piaggio ape 50 / vespa pk - pk hp - pk xl - special 50 cc

Description

Cylinder

• Material: special self-lubricating, wear-resistant, highly refined cast iron alloys, obtained by Shell Moulding gravity die-casting.
• Machining: on numerically controlled high precision machine tools.
• Recalculated and increased heat exchange surfaces.
• Exhaust and transfer ports designed and tuned for maximum thermodynamic performance.
• Dimensional and surface finish quality control performed according to Malossi's internal specifications.
• Cylinder and piston selected for a 100% fit of 0.010-0.005 mm.
• Checking of all the seals carried out.

Piston

• Material: special aluminium alloy with high silicon content and low thermal expansion.
• Machining: on numerically controlled machine tools.
• Lightened and strengthened.
• Heat exchange surfaces increased.

Piston rings

• Piston rings in very strong modular cast iron with ground, wear-resistant, hard chrome metal-spray coating on the contact surface.

Head

• Material: special die-cast aluminium alloy.
• Geometry of heat exchange surfaces recalculated and increased.
• Machining: numerically controlled high precision machines with diamond tools.
• Surface rust prevention treatment.
• Hemispheric combustion chamber with centred squish and spark plug.

Products reserved exclusively for racing in specifically designed locations according to the provisions of the competent sporting authorities. We disclaim all liability for improper use