Manufacturer reference: S4C04000007A - ATHENA cast piston. Specifically designed for urban applications on small cylinders, this aluminum piston offers a sleek and robust design: domed head, forged skirt with lateral relief, and an oversize "A" for a nominal diameter of 39.960 mm. Its finish and dimensions make it a suitable replacement part for configurations intended for a bore of Ø 39.96 mm.

• Type: Cast piston
• Diameter: Ø 39.960 mm (letter A)
• Material: Aluminum
• Number of segments: 1
• Big end pin: 12 x 8 x 33 mm (standard type)
• Compression height: 25.80 mm
• Head type: Domed
• Skirt: Forged with lateral relief
• Net weight: 0.10 kg

This piston is aimed at riders looking for an original part for the restoration or maintenance of engines on small 50 cc where a Ø 39.96 mm is required. Always follow the manufacturer's recommendations for installation, checking the piston/cylinder clearance, and tolerances. Examples of models affected by this diameter (to be verified according to engine displacement and version): SHERCO SM 50 RS SILVER, RIEJU MRT 50 SM TROPHY, MINARELLI AM6.