
40.0 mm replacement piston with a 2 mm L-shaped piston ring with internal circlip (IS) and a 1.5 mm rectangular piston ring with flank circlip (FS) for your Puch X30 Velux moped / moped with 40 mm cylinder.
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 stems and locking types on the legend in the pictures.
| Nominal diameter | 40 mm |
| Ø outside piston (A) | 39.95 mm |
| Compression height (C) | 23.6 mm |
| Curvature (D) | 3.4 mm |
| Total piston height (E) | 49.4 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | L-ring, Rectangular ring |
| Piston ring impact | Internal fuse (IS), Flank safety device (FS) |
| Piston ring height | 2 mm, 1.5 mm |
| Ø piston pin (B) | 10 mm |
| Weight piston kit | 78 g |
| Puch | ZA50 (fan-cooled) Z50 (X30 Velux) 2-speed MS, MV, MV50 3-speed VSD, DS, VZ, MC |
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Material: Steel · Surface: burnished · Area of application: (Dis)assembly tool · Width across flats: 10 mm · Width across flats: 17 mm · Total length: 130 mm · Number of components: 7 pcs · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm
CHF 19.90
Explore categories from Piston
Moped fans also bought
Wippermann drive chain No.18 (double reinforced)
Chain pitch: 1/2" x 3/16" · Chain type: 415H · Manufacturer: Wippermann · Material: Steel · Surface: blank / oiled · Color: gray · Rolling circumference: 1448 mm · Ø bore: 4.2 mm · Number of chain links: 114 pcs · Chain lock type: Spring lock · Ø Pin: 4.15 mm
CHF 33.90
Oil seal NBR 17/35/7 AS crankshaft | Puch X30
Surface: rubberized · Shaft seal type: AS - With rubberized outer casing / one sealing lip / one dust lip. · Manufacturer: Puch · Material: NBR · Ø outside: 35 mm · Ø inside: 17 mm · Width: 7 mm · Place of use: Crankshaft · Temperature resistance (min.): -30 - 100 °C
CHF 7.90
Continental 2.00 - 2.50 x 19" tube
Manufacturer: Continental · Tire width: 2 - 2.5 " · Tire width: 2.25 - 2.5 " · Tire width: 2.5 " · Tire width [mm]: 25.8 - 63.5 · Width: 2 " · Width: 2 1/4 " · Width: 2 1/2 " · Wheel size: 19 " · Tire height [%]: 100 · Old designation: 23 x 2 " · Old designation: 23 x 2.25 " · Old designation: 23 x 2.5 " · Valve type: TR6 car valve
CHF 17.50
GPO gasket set 40 - 41 mm cylinder fan-cooled | Puch X30 NG-2AH, Velux
Manufacturer: GPO · Number of components: 4 pcs · Ø cylinder: 40 mm · Ø cylinder: 41 mm · Ø outlet inside: 22 mm · Hole spacing inlet: 38 mm · Hole pattern [mm]: 44 x 44 mm · Decompressor: Yes · Hole spacing outlet: 42 mm · Area of application: Tuning
CHF 8.90
swiing® revival stud bolt set M6x30 (10.9 strength) galvanized
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Thread type: M6x1 (standard thread) · Diameter: 6 mm · Total length: 30 mm · Thread length: 12 mm · Drive: External hexagon · Width across flats: 10 mm · Strength class: 8 · Strength class: 10.9
CHF 10.70








