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. In addition, you can find out about the relevant piston rings, their stems and locking types on the legend in the pictures.
The piston kit contains piston pins, piston clips and piston rings.
You will find the corresponding assembly tools, piston pin locks and, if necessary, the corresponding cylinder in the accessories section.
Details
| Nominal diameter | 39 mm |
| Ø outside piston (A) | 38.955 mm |
| Compression height (C) | 26.3 mm |
| Curvature (D) | 1.3 mm |
| Total piston height (E) | 51.65 mm |
| Number of piston rings (F) | 1 pcs |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Internal fuse (IS) |
| Ø piston pin (B) | 12 mm |
| Tolerance group | C |
| Piston weight | 84 g |
Suitable for the following models
| Zündapp Belmondo | |
| Zündapp | 247 Motor |
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Area of application: (Dis)assembly tool · Material: Steel · Surface: burnished · Number of components: 7 pcs · Total length: 130 mm · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Width across flats SW: 10 mm · Width across flats SW: 17 mm
EUR 23.90
Meteor piston pin Ø 12 mm (length: 31 - 40 mm)
Manufacturer: Meteor · Material: Steel · Surface: Hardened · Ø piston pin (B): 12 mm · Total length: 31 mm · Total length: 31.5 mm · Total length: 33 mm · Total length: 35.5 mm · Total length: 37 mm · Total length: 38 mm · Total length: 40 mm · Pony OEM number: A1112 · Sachs OEM no.: 0216 003 105
EUR 8.30
Moped fans like you also bought:
swiing® revival needle roller bearing 12/15/14.2 original
Bearing type: Needle sleeve · Bearing cage: Sheet steel cage · Dimension needle bearing: 12/15 x 14.2 · Ø inside: 12 mm · Ø outside: 15 mm · Manufacturer: swiing® revival parts · Width: 14.2 mm · Alternative version of the Pony OEM number: A4222 · Alternative version of the Sachs OEM number: 0232 155 001 · Tomos OEM number: 035548
EUR 10.70
17 mm Bing SRF carburetor (replica)
Component group Carburetor: Carburetor complete · Material: Aluminum · Carburetor type: SRF · Nominal diameter: 17 mm · Ø Internal connection: 23 mm · Ø Air filter connection: 60 mm · Ø Air filter connection: 64 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: No · Vacuum connection: No · Choke control: Hand choke · Nozzle thread: M4x0.7 (standard thread) · Nozzle block: 2.xx · Mounting type: Plug connection clamped · Clamping screw torque (max.): 3 N/m · Clamping screw torque (max.): 4 N/m · Total length: 78 mm · Width: 64 mm · Height: 117 mm · Area of application: Tuning
EUR 78.10
swiing® ingenious 16 mm intake manifold Bing SRF | Zündapp Belmondo (Type 247)
Manufacturer: swiing® ingenious parts · Camouflaged: No · Material: Aluminum · Ø inside: 16 mm · Ø External connection: 23 mm · Mounting type: Screws · Hole spacing inlet: 40 mm · Number of fixing points: 2 pcs · Total height: 42 mm · Height flange center hole: 35 mm · Total length: 35 mm · Area of application: Tuning
EUR 48.00
17 mm carburetor set (Bing SRF replica) | Zündapp Belmondo
Component group Carburetor: Carburetor complete · Carburetor type: SRF · Nominal diameter: 16 mm · Nominal diameter: 17 mm · Ø Internal connection: 23 mm · Ø Inside entrance: 17 mm · Ø Output inside: 17 mm · Ø Air filter connection: 60 mm · Ø fuel hose connection: 6 mm · Choke control: Hand choke · Mounting type: Flange · Mounting type: Plug connection clamped · Hole spacing inlet: 40 mm · Area of application: Tuning
EUR 132.20
Collection only possible with online purchase and appointment.
