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
| Ø outside piston (A) | 38.955 mm |
| Ø piston pin (B) | 12 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 |
| Nominal diameter | 39 mm |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Internal fuse (IS) |
| 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 23.40
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 8.10
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 10.40
17 mm Bing SRF carburetor (replica)
Material: Aluminum · Area of application: Tuning · Component group Carburetor: Carburetor complete · Nominal diameter: 17 mm · Carburetor type: SRF · Width: 64 mm · Choke control: Hand choke · Nozzle thread: M4x0.7 (standard thread) · Ø fuel hose connection: 6 mm · Total length: 78 mm · Ø Internal connection: 23 mm · Height: 117 mm · Ø Air filter connection: 60 mm · Ø Air filter connection: 64 mm · Mixed oil connection: No · Mounting type: Plug connection clamped · Vacuum connection: No · Nozzle block: 2.xx · Clamping screw torque (max.): 3 N/m · Clamping screw torque (max.): 4 N/m
EUR 76.20
Bumm mirror round standard black / chrome
Mirror property: downsizing · Manufacturer: Bumm · Material: Glass · Material: Plastic · Material: Steel · Surface: chrome-plated · Surface: raw · Color: Chrome · Color: black · Ø mirror surface: 102 mm · Ø mirror rod: 8 mm · Mirror rod length: 190 mm · Total length: 300 mm · Thread type: M8x1.25 (standard thread) · Thread size: M8 · Clamping diameter: 22 mm · Test mark: none
EUR 23.40
17 mm carburetor set (Bing SRF replica) | Zündapp Belmondo
Mounting type: Flange · Mounting type: Plug connection clamped · Area of application: Tuning · Component group Carburetor: Carburetor complete · Carburetor type: SRF · Nominal diameter: 16 mm · Nominal diameter: 17 mm · Ø Inside entrance: 17 mm · Ø Output inside: 17 mm · Ø Air filter connection: 60 mm · Ø Internal connection: 23 mm · Ø fuel hose connection: 6 mm · Choke control: Hand choke · Hole spacing inlet: 40 mm
EUR 129.00
Collection only possible with online purchase and appointment.
