Yamaha Xmax 125 [2021-2026] - Cylinder kit ø 63 bolt ø 14 H20 I-Tech 4-stroke

MALOSSI cylinder kit for Yamaha Xmax 125

The MALOSSI cylinder kit ø 63 bolts ø 14 H20 I-Tech 4-stroke is assigned to the Yamaha Xmax 125 from the 2021-2026 model year range. The kit has a cylinder bore of Ø 63 mm and is designed as a 4-stroke component. The piston is lightweight and reinforced and equipped with three rings.

Technical characteristics

• Material: aluminum
• Cylinder bore: Ø 63 mm
• Stroke: 58.7mm
• Displacement: 183 cc
• Compression ratio: 11.27
• Piston compression: Racing
• Piston pin: Ø 14 mm

Design of cylinder and piston

The cylinder is made of a primary aluminum alloy with a high proportion of hardened and tempered silicon. The cylinder liner has a silicon carbide coating in a galvanic nickel die. A cross-smoothing with two diamond passages and very tight tolerances completes the design. The cylinder-piston connection has a tolerance of 0.05 mm; the heat exchange surfaces have been recalculated and improved.

The piston uses a special aluminum alloy with high silicon content, low thermal expansion and a tin layer on the sliding surfaces. The special rings are designed for high sliding properties and very high mechanical strength. A compression ring made of nitrided and chrome-plated steel, a special ring made of cast iron and a three-part wiper ring made of special chrome-plated steel alloy are installed.

Important assembly information

Installation is only intended with a Force Master 2.1 control unit. The product is intended exclusively for competitions at designated venues in accordance with the regulations of the relevant sports associations.