40.0 mm replacement piston with a 2 mm L-shaped piston ring with internal circlip (IS) and a 1.5 mm rectangular piston ring with flank circlip (FS) for your Puch X30 Velux moped / moped with 40 mm cylinder.
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 | 40 mm |
| Ø outside piston (A) | 39.95 mm |
| Ø piston pin (B) | 10 mm |
| Compression height (C) | 23.6 mm |
| Curvature (D) | 3.4 mm |
| Total piston height (E) | 49.4 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | L-ring, Rectangular ring |
| Piston ring impact | Internal fuse (IS), Flank safety device (FS) |
| Piston ring height | 2 mm, 1.5 mm |
| Weight piston kit | 78 g |
| Puch | ZA50 (fan-cooled) Z50 (X30 Velux) 2-speed MS, MV, MV50 3-speed VSD, DS, VZ, MC |
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