Segment 40.3 mm - AIRSAL
Replace your worn segment with an original AIRSAL part designed for a 50 cm3 displacement. This 40.3 mm segment plays a crucial role as the seal between the piston and cylinder: ensuring the tightness of the combustion chambers, limiting compression leaks, and maintaining proper gas timing. A simple and reliable part for the routine maintenance of your urban engine.

• Brand: AIRSAL
• Designation: SEGMENT 40.3MM (40.3 mm)
• Manufacturer reference: 111332403
• Category: Segment / engine part

Compatible with mopeds and small urban displacements — check the piston size on your engine before installation. Among the commonly affected models:

• VENT DÉRAPAGE 50 RR (2025 - 50 cm3)
• SHERCO SM 50 RS SILVER (2024 - 50 cm3)
• RIEJU MRT 50 SM TROPHY (2024 - 50 cm3)

An essential spare part for restoring the piston-cylinder assembly. Installation and adjustment by a professional or experienced DIYer are recommended to ensure correct play and tolerances. Ideal for engine maintenance in urban environments and refurbishment operations.