39.0 mm piston with a 1.5 mm rectangular piston ring with flank lock (FS) for Zündapp ZR25 / ZR50 mopeds / mopeds with a type 250 engine.
The detailed dimensioning 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 stems and locking types on the legend in the pictures.
| Manufacturer | Meteor |
| Ø outside piston (A) | 38.95 mm |
| Compression height (C) | 23 mm |
| Curvature (D) | 1.5 mm |
| Total piston height (E) | 48 mm |
| Number of piston rings (F) | 1 pcs |
| Nominal diameter | 39 mm |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Flank safety device (FS) |
| Piston ring height | 1.5 mm |
| Ø piston pin (B) | 12 mm |
| Tolerance group | CD |
| Weight piston kit | 75 g |
| Zündapp | ZR 10 / ZR 20 / ZR 22 / ZR 30 / ZB 22 (type 250-447) ZD 10 / ZD 30 (type 250-466) ZA 25 / ZA 40 (type 250-460) |
Ratings
Accessories & related products
Meteor piston pin Ø 12 mm (length: 31 - 40 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 · Manufacturer: Meteor · Material: Steel · Surface: Hardened · Ø piston pin (B): 12 mm · Pony OEM number: A1112 · Sachs OEM no.: 0216 003 105
EUR 8.25
Explore categories from Piston
Moped fans also bought
Hot 
KMC drive chain 415H (reinforced) 128L
Chain type: 415H · Chain pitch: 1/2" x 3/16" · Manufacturer: KMC · Material: Steel · Surface: blank / oiled · Color: gray · Number of chain links: 128 pcs · Rolling circumference: 1626 mm · Chain lock type: Spring lock · Ø bore: 4 mm · Ø Pin: 3.94 mm
EUR 15.00
GPO 15 mm carburetor tuning | Puch
Manufacturer: GPO · Mounting type: Plug connection clamped · Material: Aluminum · Camouflaged: No · Area of application: Tuning · Component group Carburetor: Carburetor complete · Width: 50 mm · Carburetor type: SRE · Height: 95 mm · Nominal diameter: 15 mm · Total length: 66 mm · Ø Internal connection: 20 mm · Ø Inside entrance: 15 mm · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: No · Vacuum connection: No · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Nozzle block: 2.17 · Nozzle size: 62 · Clamping screw torque (max.): 4 N/m
EUR 77.60
GPO mushroom air filter grille, Bing SRE (Ø=20 mm)
Manufacturer: GPO · Mounting type: Bride · Mounting type: Plug connection clamped · Material: Metal · Camouflaged: No · Material: Rubber · Area of application: Tuning · Color: Chrome · Color: black · Filter type: Grille · Total length: 113 mm · Ø Internal connection: 20 mm · Length rubber part: 63.5 mm · Length of filter section: 49 mm · Ø outside: 61 mm
EUR 15.40
Hot
Gas cable Ø 1.25 mm x 220 cm (cylindrical nipple) Bing
Ø Stranded wire: 1.25 mm · Nipple shape: Cylinder · Ø nipple: 3 mm · Manufacturer: Made in Germany · Area of application: Standard · Material: Steel · Surface: galvanized (blue) · Cable length: 2200 mm · Number of components: 1 pcs · Nipple length: 5 mm
EUR 2.85
swiing® revival gasket outlet | Zündapp Belmondo
Manufacturer: swiing® revival parts · Material: Graphite / Graphite · Total length: 53 mm · Ø inside: 25 mm · Ø mounting hole: 7.1 mm · Ø outside: 38.3 mm · Place of use: Outlet · Thickness: 1.5 mm · Number of fixing points: 2 pcs · Hole spacing: 40 mm
EUR 4.65
swiing® ingenious exhaust manifold 28 mm Inox right-hand | Alpa SP 3000, Zündapp Bergsteiger
Ø inside: 26 mm · Ø outside: 28 mm · Total length: 390 mm · Manufacturer: swiing® ingenious parts · Material: Chrome steel (colloquially known as stainless steel) · Hole spacing outlet: 40 mm · Number of fixing points: 2 pcs · Mounting type: Stud bolts & nuts
EUR 131.50
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
