



The WISECO forged piston (manufacturer reference W641M05400A) is designed for cross applications where reliability and durability are essential. Forged from aluminum, it is suitable for both original replacements and engine modifications to optimize performance safely. Manufactured by a globally recognized brand for nearly 50 years, it meets the quality standards expected by enduro and motocross riders.
This piston provides a high level of mechanical strength against the specific stresses of cross (thermal shocks, high RPM). Its STD oversize adjustment ensures compatibility with prepared or original cylinders corresponding to size A. Before installation, check the piston/cylinder clearance and use the appropriate rings to ensure proper operation.
Main compatibilities: notably compatible with SUZUKI RM 125 (1997–1999, 125 cm³). For any specific adaptation, check the manufacturer references and engine dimensions.