Vespa Primavera 125 [2014-2016] - aluminum cylinder ø 63 pin ø 14 4-stroke

MALOSSI aluminum cylinder for the Vespa Primavera 125

The MALOSSI aluminum cylinder ø 63 pin ø 14 4-stroke is intended as a big-bore component for the Vespa Primavera 125 in the 2014-2016 model year range. The design combines a bore of 63 mm with a stroke of 58.6 mm and a displacement of 182.67 cm³.

Technical features

• Cylinder material: primary aluminum alloy with a high proportion of hardened and tempered silicon
• Cylinder liner with silicon carbide coating in electroplated nickel form
• Bore: 63mm
• Stroke: 58.6mm
• Displacement: 182.67 cm³
• Compression ratio: 11.15:1
• Cylinder-piston connection with a tolerance of 0.05 mm

The liner features crossed smoothing with two diamond passes and very limited tolerances. Machining is carried out on numerically controlled machine tools. Revised heat exchange surfaces support the thermal design of the cylinder.

Pistons and piston rings

The ultra-compact piston is made of a special aluminum alloy with a high silicon content and low thermal expansion. Its sliding surfaces have a tin coating. The weight-reduced and reinforced piston is designed with three rings: a nitrided and chrome-plated I-compression ring, a special cast ring and a three-part wiper ring made of special chrome-plated steel alloy.

Vehicle assignment and notice

Suitable for Vespa Primavera 125, built between 2014 and 2016. Installation is intended exclusively with the Force Master 2 control unit. The product is intended exclusively for competitions at designated venues in accordance with the regulations of the relevant sports associations.