38.0 mm piston with two 2 mm rectangular piston rings with flank lock (FS) to fit the original Athena 38 mm cylinder kit for your Puch moped / moped.
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 dimensions and locking types on the legend in the pictures.
| Manufacturer | Athena |
| Nominal diameter | 38 mm |
| Ø outside piston (A) | 37.96 mm |
| Ø piston pin (B) | 12 mm |
| Compression height (C) | 22.6 mm |
| Curvature (D) | 3.56 mm |
| Total piston height (E) | 52.66 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Flank safety device (FS) |
| Piston ring height | 2 mm |
| Tolerance group | A |
| Weight piston kit | 78 g |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
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