CYLINDRE ALUMINIUM 75.5MM - PIAGGIO/VESPA 300

Cylinder

• Material: primary aluminium alloy with a high content of hardened and tempered silicon, cylinder liner with silicon carbide coating in a galvanic nickel die and crossed smoothing with two diamond passages with very limited tolerances
• Machining: on machine tools with high precision numerical control
• Cylinder-piston connection with an allowance of 0.05 mm
• Recalculated and upgraded heat exchange surfaces

Piston

• Ultra compact with 3 rings
• Material: special aluminium alloy with high silicon content, low thermal expansion and a tin facing on the sliding surfaces
• Machining on machine tools with numerical control
• Lightened and reinforced
• Upgraded heat exchange surfaces

Piston rings

• Special rings with high sliding ease and very high mechanical resistance
• I° ring compression in nitrided and chromium steel
• II° special cast iron ring
• Three piece scraper ring made of chromiumplated special steel alloy