Vespa Primavera 3 V [2014-2024] - aluminum cylinder ø 63 pin ø 14 4-stroke

MALOSSI aluminum cylinder for Vespa Primavera 3 V

The MALOSSI aluminum cylinder ø 63 pin ø 14 4-stroke is designed for the Vespa Primavera 3 V in the 2014-2024 model year range. The component belongs to the big bore kit category and has a bore of 63 mm. The cylinder is intended exclusively for racing use at designated venues in accordance with the specifications of the responsible sports associations.

Technical features

• Material: aluminum or primary aluminum alloy with a high silicon content
• Bore: 63mm
• Stroke: 58.6mm
• Displacement: 182.67 cm³
• Compression ratio: 11.15:1
• Piston compression: Racing

The cylinder liner has a silicon carbide coating in electroplated nickel form and crossed smoothing with two diamond passes. Machining is carried out on numerically controlled precision machine tools. Cylinder and piston are matched to each other with a tolerance of 0.05 mm. Revised heat exchange surfaces support the structural design of the cylinder.

Pistons and piston rings

The ultra-compact three-ring piston is made of a special aluminum alloy with high silicon content, low thermal expansion and tin coating on the sliding surfaces. It is weight-reduced and reinforced. The piston ring equipment includes a nitrided and chrome-plated steel ring, a special cast ring and a three-part wiper ring made of special chrome-plated steel alloy.

Important note about the control unit

Installation is carried out exclusively together with the Force Master control unit intended for the respective engine and emissions version. The regulations of the responsible sports authorities apply to racing.