39.0 mm piston with a rectangular piston ring with internal fuse (IS), suitable for Zündapp Belmondo mopeds, Zündapp Bergsteiger M25/M50 mopeds, as well as Alpa Spezial 3000 or Alpa Black River small motorcycles which have a Zündapp type 247 engine installed.
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 positions and locking types on the legend in the pictures.
Tolerance type: CD
The piston kit contains piston pins, piston clips and piston rings.
Corresponding assembly tools, piston rings, piston pin locks etc. can be found under accessories.
Quality product from the Italian manufacturer Meteor.
| Nominal diameter | 39 mm |
| Manufacturer | Meteor |
| Ø outside piston (A) | 38.96 mm |
| Compression height (C) | 26.2 mm |
| Curvature (D) | 1.3 mm |
| Total piston height (E) | 51.5 mm |
| Number of piston rings (F) | 1 pcs |
| Piston ring mold | Rectangular ring |
| Ø piston pin (B) | 12 mm |
| Piston ring impact | Internal fuse (IS) |
| Tolerance group | CD |
| Piston weight | 85 g |
| Zündapp Belmondo | |
| Zündapp | 247 Motor |
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Material: Steel · Surface: burnished · Total length: 130 mm · Manufacturer: GPO · Number of components: 7 pcs · Area of application: (Dis)assembly tool · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Width across flats SW: 10 mm · Width across flats SW: 17 mm
EUR 24.30
Moped fans also bought
Motorex engine oil (gear oil) manual 450 ml
Manufacturer: Motorex · Oil type: GL4 · Viscosity (SAE): 80W · Area of application: Gearbox lubrication with clutch · Contents [ml]: 450 ml · Gearbox type: Foot control · Gearbox type: Manual gearshift · Temperature resistance (min.): -30 - 220 °C
EUR 12.10
EUR 26.89/l
Karcoma fuel tap M16x1 vertical | Puch X30 Velux
Manufacturer: Karcoma · Possible lever positions: open / closed / reserve · Thread type: MF16x1 (fine pitch thread) · Material lever: Metal · Mounting type: Union nut · Filter type: Plastic net · Ø fuel hose connection: 6 mm · Installation direction: vertical / vertical · Outlet direction: any · Spare tube shape: straight · Reserve level: 50 mm
EUR 36.50
swiing® ingenious needle roller bearing 12/15/14.2 original silver cage
Bearing type: Needle roller and cage assembly · Manufacturer: swiing® ingenious parts · Bearing cage: Silver cage · Ø outside: 15 mm · Ø inside: 12 mm · Width: 14.2 mm · Dimension needle bearing: 12/15 x 14.2 · Alternative version of the Pony OEM number: A4222 · Alternative version of the Sachs OEM number: 0232 157 001 · Tomos OEM number: 035548
EUR 14.50
Collection only possible with online purchase and appointment.
