WISECO forged piston designed for Cross engines: robustness and precision at the heart of preparation. This piston (manufacturer reference W641M05400B) is made of forged aluminum and is intended for replacement in case of wear or during an engine overhaul where the reliability of moving parts is crucial.

• Diameter: Ø 53.960 mm (53.96 mm)
• Oversize: +0.01 mm — Letter B
• Compression: standard
• Material: forged aluminum
• Usage: Cross, suitable for maintenance interventions and engine preparations

The forged design offers a more compact structure than casting, suitable for the repeated stresses of off-road riding. This piston maintains the specified oversize dimensions for a precise fit in the bore and is part of a serious maintenance approach: checking the rings, the cylinder head mating surface, and the recommended assembly clearances before reassembly.

Common applications: 125 cc Cross models — notably SUZUKI RM 125 (1997, 1998, 1999). Check the reference and cylinder dimensions before ordering to ensure compatibility with your machine.