43.5 mm piston with a 2 mm L-piston ring with internal circlip (IS) and a 1.5 mm rectangular piston ring with flank circlip (FS) for the «GPO Metrakit» cylinder kit on your Puch Maxi S, N, X30 Sport NS, NL and Supermaxi LG1 and LG2 moped / moped.
The detailed dimensioning 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.
| Manufacturer | GPO |
| Material | Aluminum |
| Nominal diameter | 43.5 mm |
| Ø outside piston (A) | 43.46 mm |
| Ø piston pin (B) | 12 mm |
| Compression height (C) | 22.9 mm |
| Curvature (D) | 3.1 mm |
| Total piston height (E) | 49.55 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | Rectangular ring, L-ring |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 1.55 mm, 2 mm |
| Thick piston ring | 1.9 mm, 1.8 mm |
| Weight piston kit | 87 g |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
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