44.0 mm Vertex piston with two pieces of 1.5 mm rectangular piston rings with internal locking (IS). The piston set is suitable for the 44 mm swiing tuning cylinder kit for Zündapp Belmondo mopeds, Zündapp Bergsteiger M25/M50 mopeds, as well as Alpa Spezial 3000 and Alpa Black River small motorcycles which have a Zündapp type 247 engine installed.
The Vertex piston is characterized by its high-quality and precise fit.
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 positions and locking types on the legend in the pictures.
The piston kit contains piston pins, piston clips and piston rings.
You will find the appropriate assembly tools, piston pin locks and, if necessary, the corresponding cylinder in the accessories section.
The Vertex piston manufactured for swiing® is characterized by its high-quality and precise fit.
| Manufacturer | swiing® ingenious parts |
| Ø outside piston (A) | 43.95 mm |
| Compression height (C) | 25.05 mm |
| Curvature (D) | 2.45 mm |
| Total piston height (E) | 51.5 mm |
| Number of piston rings (F) | 2 pcs |
| Nominal diameter | 44 mm |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 1.5 mm |
| Ø piston pin (B) | 12 mm |
| Piston weight | 92 g |
| Zündapp Belmondo | |
| Zündapp | 247 Motor |
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