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 fits and locking types on the legend in the pictures.
Tolerance type: FG
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) | 38.975 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 |
| Piston ring impact | Internal fuse (IS) |
| Ø piston pin (B) | 12 mm |
| Tolerance group | FG |
| Weight piston kit | 86 g |
| Zündapp | Belmondo (Type 247-71) Moped 25 (M 25) / Moped M 50 Bergsteiger (Type 247-434) |
Ratings
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Material: Steel · Surface: burnished · Area of application: (Dis)assembly tool · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Number of components: 7 pcs · Total length: 130 mm · Width across flats: 10 mm · Width across flats: 17 mm
EUR 24.00
Moped fans also bought
swiing® revival wheel axle M10.5x1 x 175 coaster brake galvanized
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Thread type: MF10.5x1 (fine pitch thread) · Total length: 175 mm · Ø shaft: 10.5 mm · Shank length: 95.6 mm · Thread length: 34 mm · Thread length: 45 mm
EUR 28.80
17 mm Bing SRF carburetor (replica)
Nominal diameter: 17 mm · Material: Aluminum · Component group Carburetor: Carburetor complete · Carburetor type: SRF · Choke control: Hand choke · Width: 64 mm · Total length: 78 mm · Nozzle thread: M4x0.7 (standard thread) · Mounting type: Plug connection clamped · Ø fuel hose connection: 6 mm · Ø Air filter connection: 60 mm · Ø Air filter connection: 64 mm · Height: 117 mm · Ø Internal connection: 23 mm · Mixed oil connection: No · Vacuum connection: No · Nozzle block: 2.xx · Clamping screw torque (max.): 3 N/m · Clamping screw torque (max.): 4 N/m · Area of application: Tuning
EUR 78.20
NGK BR9HIX Spark plug short thread suppressed Iridium
Manufacturer: NGK · Candle designation: BR9HIX · Candle thread type: short · Spark plug socket: M4 · Thread type: MF14x1.25 (fine pitch thread) · Spark plug socket: SAE · Suppressed: Yes · Electrode material: Iridium · Area of application: High End · Area of application: MX · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Width across flats: 21 mm
EUR 28.30
Meteor piston 38.955 mm #BC | Zündapp Belmondo, Bergsteiger
Manufacturer: Meteor · Nominal diameter: 39 mm · Ø outside piston (A): 38.955 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 · Piston ring impact: Internal fuse (IS) · Ø piston pin (B): 12 mm · Tolerance group: BC · Weight piston kit: 86 g
EUR 72.10
swiing® ingenious 16 mm intake manifold Bing SRF | Zündapp Belmondo (Type 247)
Manufacturer: swiing® ingenious parts · Material: Aluminum · Camouflaged: No · Ø inside: 16 mm · Mounting type: Screws · Hole spacing inlet: 40 mm · Number of fixing points: 2 pcs · Ø External connection: 23 mm · Total height: 42 mm · Height flange center hole: 35 mm · Total length: 35 mm · Area of application: Tuning
EUR 48.10
17 mm carburetor set (Bing SRF replica) | Zündapp Belmondo
Component group Carburetor: Carburetor complete · Area of application: Tuning · Nominal diameter: 16 mm · Nominal diameter: 17 mm · Choke control: Hand choke · Carburetor type: SRF · Ø fuel hose connection: 6 mm · Mounting type: Flange · Mounting type: Plug connection clamped · Ø Inside entrance: 17 mm · Ø Internal connection: 23 mm · Ø Output inside: 17 mm · Hole spacing inlet: 40 mm · Ø Air filter connection: 60 mm
EUR 132.40
Collection only possible with online purchase and appointment.
