WISECO Forged Piston designed for cross displacements: robustness and precision for engine rebuilds or top-end preparations. This WISECO piston, manufacturer reference W559M05650, is machined from forged aluminum to withstand the thermal and mechanical stresses encountered in off-road conditions, without any unproven performance claims.

• Diameter: Ø 56.50 mm (oversize 050 = +0.50 mm)
• Piston Compression: Standard
• Material: Forged aluminum
• Number of Rings: Ring kit included
• Usage: Cross Universal, suitable for high off-road demands

The piston is designed to be mounted with the supplied rings and requires standard usage checks: bore inspection, pin/ring alignment, connecting rod–crankshaft assembly checks, and initial break-in according to manufacturer recommendations. Its finish and manufacturing tolerances facilitate adjustment during an oversize cylinder installation.

Main compatibilities (examples): YAMAHA YZ 125 (1986, 1987, 1988 - 125 cm3). For safe installation, always compare the piston dimensions with those of the cylinder and adhere to the recommended torque and clearances.