ALUMINIJ-CILINDER Ø 57,5 pin Ø 15 MHR VESPA ET3 Prim./ETS/PK 125

Technical features

Cylinder

• Material: alluminium
• Cooling: liquid
• Bore: Ø 57,5 mm
• Stroke: 51 mm
• Capacity: 132 cc
• Compression ratio: 1:12,7
• Cylinders obtained by gravity die-casting in permanent steel moulds.
• Material: hardened and tempered high silicon content primary aluminium alloy.
• Machining: on numerically controlled high precision machine tools.
• Cyliner with silicon carbide metal-spray coating on a galvanic nickel matrix, cross-honed with passes with diamonds for very tight tolerances.
• Recalculated and upgraded heat exchange surfaces.
• Exhaust and transfer ports designed and tested for maximum thermodynamic performance.
• Dimensional and surface finish quality control performed according to Malossi’s internal specifications.
• Cylinder and piston selected for a fit of 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 reinforced.
• 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.

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