38.0 mm piston with a 1.5 mm rectangular piston ring with internal fuse (IS) for slotted cylinders of various Puch mopeds / mopeds.
The detailed dimensions of the piston according to the technical drawing can be found in the details. You can also find out about the relevant piston rings, their stems and locking types on the legend in the pictures.
| Nominal diameter | 38 mm |
| Manufacturer | Athena |
| Ø outside piston (A) | 37.94 mm |
| Compression height (C) | 22.5 mm |
| Curvature (D) | 3.55 mm |
| Total piston height (E) | 55 mm |
| Number of piston rings (F) | 1 pcs |
| Piston ring mold | Rectangular ring |
| Ø piston pin (B) | 12 mm |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 1.5 mm |
| Tolerance group | A |
| Weight piston kit | 76 g |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
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