38.0 mm replacement piston with two 2 mm rectangular piston rings with flank lock (FS) for the blown original Puch cylinder suitable for your X30 Velux and X30 Automat (ZA50) 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 stems and locking types on the legend in the pictures.
This piston is fitted with a short piston skirt.
| Nominal diameter | 38 mm |
| Ø outside piston (A) | 37.95 mm |
| Compression height (C) | 22.9 mm |
| Curvature (D) | 3.2 mm |
| Total piston height (E) | 50.1 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 |
| Ø piston pin (B) | 12 mm |
| Weight piston kit | 74 g |
| Puch | E50 ZA50 (air-cooled) ZA50 (fan-cooled) Z50 (X30 Sport) Z50 (X30 Velux) 2-speed MS, MV, MV50 3-speed VSD, DS, VZ, MC |
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