VESPA SPRINT 125 3 V [2017-2023] - aluminum cylinder ø 63 pin ø 14 4-stroke

MALOSSI aluminum cylinder for the Vespa Sprint 125 3 V

The MALOSSI aluminum cylinder with 63 mm bore and 14 mm piston pin is designed for the VESPA SPRINT 125 3 V in the 2017-2023 model year range. The 4-stroke cylinder version uses a primary aluminum alloy with a high proportion of hardened and tempered silicon.

Technical features

• Bore: 63mm
• Stroke: 58.6mm
• Displacement: 182.67 cm³
• Compression ratio: 11.15:1
• Material: aluminum
• Piston compression: Racing
• Cylinder liner with silicon carbide coating in electroplated nickel form
• 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 precision machine tools. Revised heat exchange surfaces support the structural design of the cylinder.

Pistons and piston rings

The ultra-compact 3-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. Special rings with high sliding properties and high mechanical strength complement the piston design: a nitrided and chrome-plated I-ring, a special cast ring and a three-part wiper ring made of special chrome-plated steel alloy.

Important assembly information

The cylinder can only be installed with a Force Master 2.1 control unit. The product is intended exclusively for racing at designated venues in accordance with the regulations of the relevant sports authorities. No liability is assumed for improper use.