38 mm replacement piston with two rectangular piston rings with flank lock (FS) suitable for blown Sachs 50/3, 50/4 mopeds / mopeds with reproduction cylinders.
The detailed dimensions of the piston according to the technical drawing can be found in the details. You can also find out about the piston rings used, their piston rods and locking types on the legend in the pictures.
The piston has a small piston window on the inlet side.
The piston kit contains piston pins, piston clips and piston rings.
You will find the appropriate assembly tool, piston pin locks and, if necessary, the corresponding cylinder in the accessories section.
Good, inexpensive standard spare part. GPO – GOOD PARTS ONLY.
Alternative to the original Sachs spare part number: 0290 058 025
| Manufacturer | GPO |
| Nominal diameter | 38 mm |
| Thick piston ring | 2 mm |
| Ø outside piston (A) | 37.94 mm |
| Compression height (C) | 27.5 mm |
| Curvature (D) | 3.5 mm |
| Total piston height (E) | 53 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | Rectangular ring |
| Ø piston pin (B) | 12 mm |
| Piston ring impact | Flank safety device (FS) |
| Piston ring height | 1.7 mm |
| Piston weight | 78 g |
| Alternative version of the Sachs OEM number | 0290 058 025 |
| Sachs | 50/3 50/4 - MLFB (2.6 PS), LKH (4.5 PS) |
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Collection only possible with online purchase and appointment.
