38.00 mm ELKO piston with a 2 mm rectangular piston ring featuring flank protection (FS), compatible with Puch Maxi S / N, Puch X30 Sport NS / NL, and Puch X30 Velux mopeds.
You can find the detailed dimensions of the piston according to the technical drawing in the details section. You can also find information about common piston rings, their clearances, and retaining types in the legend accompanying the images.
Tolerance: 3 or D (depending on the batch)
The piston kit includes a piston pin, piston clips, and piston rings.
You’ll find the necessary installation tools, piston pin retainers, and, if needed, the corresponding cylinder in the accessories section.
NOS – New from old stock.
A quality product from the Austrian manufacturer König under the ELKO brand.
| Manufacturer | ELKO (König) |
| Ø outside piston (A) | 37.975 mm |
| Compression height (C) | 22.5 mm |
| Curvature (D) | 3.3 mm |
| Total piston height (E) | 55 mm |
| Number of piston rings (F) | 1 pcs |
| Nominal diameter | 38 mm |
| Piston ring impact | Flank safety device (FS) |
| Piston ring mold | Rectangular ring |
| Piston ring height | 2 mm |
| Ø piston pin (B) | 12 mm |
| Tolerance group | D, 3 |
| Weight piston kit | 81 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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