
41.0 mm replacement piston with a rectangular piston ring with flank circlip (FS) and an L-shaped piston ring with internal circlip (IS) for the blown 41 mm Puch X30 Velux mopeds / mopeds and M50, MS50, VS50, DS50, VZ50 small engine bikes with 12 mm piston pin.
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.
| Nominal diameter | 41 mm |
| Manufacturer | GPO |
| Ø outside piston (A) | 40.94 mm |
| Compression height (C) | 23.2 mm |
| Curvature (D) | 3.7 mm |
| Total piston height (E) | 49.3 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) |
| Ø piston pin (B) | 12 mm |
| Weight piston kit | 85 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 · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Total length: 130 mm · Width across flats: 10 mm · Width across flats: 17 mm · Number of components: 7 pcs · Area of application: (Dis)assembly tool
EUR 23.80
GPO 41 mm cylinder kit fan-cooled 12 mm KoBo | Puch X30 Velux, N-2AH
Manufacturer: GPO · Manufacturer: Meteor Racing · Manufacturer: swiing · Area of application: Tuning · Material: Gray cast iron · Displacement: 60 ccm · Surface: sandblasted · Crankshaft stroke: 43 mm · Nominal diameter: 41 mm · Ø cylinder neck: 43.2 mm · Ø Inlet inside: 14.6 mm · Thread inlet: M6x1 (standard thread) · Ø outlet inside: 19.4 mm · Ø piston pin (B): 12 mm · Hole spacing outlet: 42 mm · Number of fixing points: 4 pcs · Outlet type: straight · Hole spacing inlet: 32 mm · Thread outlet: M6x1 (standard thread) · Hole pattern [mm]: 44 x 44 · Camouflaged: No
EUR 131.30
Moped fans also bought
GPO gasket set 40 - 41 mm cylinder fan-cooled | Puch X30 NG-2AH, Velux
Manufacturer: GPO · Ø cylinder: 40 mm · Ø cylinder: 41 mm · Hole spacing inlet: 38 mm · Ø outlet inside: 22 mm · Hole spacing outlet: 42 mm · Number of components: 4 pcs · Hole pattern [mm]: 44 x 44 mm · Area of application: Tuning · Decompressor: Yes
EUR 10.60
swiing® revival stud bolt cylinder base M6x26 - 10.9 strength | Sachs
Manufacturer: swiing® revival parts · Surface: galvanized (blue) · Diameter: 5.8 mm · Material: Steel · Total length: 26 mm · Thread type: M6x1 (standard thread) · Strength class: 10.9 · Thread length: 9 mm · Thread length: 13 mm
EUR 2.15
GPO cylinder gasket set BAD ASS Lucifer / GPO Sombrero 41 mm | Puch X30 Velux, M50, MS
Manufacturer: GPO · Material: Aluminum · Material: Sealing paper · Number of components: 4 pcs · Ø outlet inside: 27 mm · Hole spacing inlet: 32 mm · Ø cylinder: 41 mm · Thickness: 0.4 mm · Thickness: 0.45 mm · Hole pattern [mm]: 44 x 44 mm · Hole spacing outlet: 32 mm · Area of application: Tuning · Decompressor: Yes
EUR 23.80
GPO 41 mm cylinder kit fan-cooled 12 mm KoBo | Puch X30 Velux, N-2AH
Manufacturer: GPO · Manufacturer: Meteor Racing · Manufacturer: swiing · Area of application: Tuning · Material: Gray cast iron · Displacement: 60 ccm · Surface: sandblasted · Crankshaft stroke: 43 mm · Nominal diameter: 41 mm · Ø cylinder neck: 43.2 mm · Ø Inlet inside: 14.6 mm · Thread inlet: M6x1 (standard thread) · Ø outlet inside: 19.4 mm · Ø piston pin (B): 12 mm · Hole spacing outlet: 42 mm · Number of fixing points: 4 pcs · Outlet type: straight · Hole spacing inlet: 32 mm · Thread outlet: M6x1 (standard thread) · Hole pattern [mm]: 44 x 44 · Camouflaged: No
EUR 131.30
GPO Ø 41 mm "Sombrero" cylinder kit | Puch X30 Velux, NG-2AH
Nominal diameter: 41 mm · Manufacturer: GPO · Material: Gray cast iron · Displacement: 57 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 44.7 mm · Ø outlet inside: 25 mm · Ø Inlet inside: 19 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Ø piston pin (B): 10 mm · Ø piston pin (B): 12 mm · Outlet type: straight · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No · Camouflaged: No · Area of application: Tuning
EUR 238.80






