APRILIA SX 125 [2018-2026] - H2O cylinder-piston kit - Ø67mm

MALOSSI H2O cylinder-piston kit with Ø 67 mm bore

The MALOSSI H2O cylinder-piston kit is designed for the APRILIA SX 125 built between 2018 and 2026. Cylinders, pistons and piston rings are matched to a piston-cylinder fit of 0.05 mm. Newly calculated, extra-large heat exchange surfaces support heat transfer within the assembly.

Cylinder and machining

• Bore: Ø 67 mm
• Compression ratio: 12:1
• Piston-cylinder fit: 0.05 mm
• Manufacturing on high-precision CNC machines

The cylinder is made of a high-silicon, refined and hardened aluminum alloy. Its inner liner has a silicon carbide coating on a galvanic nickel matrix. The surface is finished by cross-smoothing in two diamond steps, maintaining tight tolerances.

Pistons and piston rings

The super-compact piston with three segments is made from a special aluminum-silicon alloy with low thermal expansion. A tin additive is used on the sliding surfaces. The CNC machining combines a weight-reduced, reinforced design with extra large heat exchange surfaces.

• First compression ring made of nitrided and chrome-plated steel
• Second piston ring made of special steel
• Three-piece oil scraper made of alloyed and chrome-plated special steel
• Special piston rings with a large stroke and extremely high mechanical strength

Vehicle assignment

Suitable exclusively for the APRILIA SX 125, built between 2018 and 2026.

Factual usage information

This product is intended exclusively for competitions at designated venues in accordance with the regulations of the relevant sports associations. No liability is assumed for improper use.