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 |
| Piston weight | 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
Material: Steel · Surface: burnished · Total length: 130 mm · Manufacturer: GPO · Number of components: 7 pcs · Area of application: (Dis)assembly tool · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Width across flats SW: 10 mm · Width across flats SW: 17 mm
EUR 23,30
GPO 41 mm cylinder kit fan-cooled 12 mm KoBo | Puch X30 Velux, N-2AH
Nominal diameter: 41 mm · Manufacturer: GPO · Manufacturer: Meteor Racing · Manufacturer: swiing · Camouflaged: No · Surface: sandblasted · Displacement: 60 ccm · Material: Gray cast iron · Crankshaft stroke: 43 mm · Ø cylinder neck: 43.2 mm · Ø outlet inside: 19.4 mm · Ø Inlet inside: 14.6 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Ø piston pin (B): 12 mm · Area of application: Tuning · 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
EUR 128,80
Not in stock
Moped fans also bought
swiing® ingenious flame tube 28 mm chrome | Puch X30 Velux
Manufacturer: swiing® ingenious parts · Material: Steel · Surface: chrome-plated · Ø inside: 25 mm · Ø outside: 28 mm · Total length: 380 mm · Color: Chrome · Number of fixing points: 2 pcs · Mounting type: Stud bolts & nuts · Hole spacing outlet: 42 mm
EUR 46,80
GPO gasket set 40 - 41 mm cylinder fan-cooled | Puch X30 NG-2AH, Velux
Manufacturer: GPO · Ø cylinder: 40 mm · Ø cylinder: 41 mm · Ø outlet inside: 22 mm · Number of components: 4 pcs · Hole spacing inlet: 38 mm · Area of application: Tuning · Hole spacing outlet: 42 mm · Hole pattern [mm]: 44 x 44 mm · Decompressor: Yes
EUR 10,40
GPO cylinder gasket set BAD ASS Lucifer / GPO Sombrero 41 mm | Puch X30 Velux, M50, MS
Manufacturer: GPO · Thickness: 0.4 mm · Thickness: 0.45 mm · Material: Aluminum · Material: Sealing paper · Area of application: Tuning · Ø cylinder: 41 mm · Ø outlet inside: 27 mm · Hole spacing inlet: 32 mm · Decompressor: Yes · Hole spacing outlet: 32 mm · Number of components: 4 pcs · Hole pattern [mm]: 44 x 44 mm
EUR 23,30
GPO 41 mm cylinder kit fan-cooled 12 mm KoBo | Puch X30 Velux, N-2AH
Nominal diameter: 41 mm · Manufacturer: GPO · Manufacturer: Meteor Racing · Manufacturer: swiing · Camouflaged: No · Surface: sandblasted · Displacement: 60 ccm · Material: Gray cast iron · Crankshaft stroke: 43 mm · Ø cylinder neck: 43.2 mm · Ø outlet inside: 19.4 mm · Ø Inlet inside: 14.6 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Ø piston pin (B): 12 mm · Area of application: Tuning · 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
EUR 128,80
Not in stock
GPO Ø 41 mm "Sombrero" cylinder kit | Puch X30 Velux, NG-2AH
Nominal diameter: 41 mm · Manufacturer: GPO · Material: Gray cast iron · Area of application: Tuning · Crankshaft stroke: 43 mm · Displacement: 57 ccm · Ø cylinder neck: 44.7 mm · Ø outlet inside: 25 mm · Ø Inlet inside: 19 mm · Number of fixing points: 4 pcs · Ø piston pin (B): 10 mm · Ø piston pin (B): 12 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Decompressor: No · Hole spacing outlet: 42 mm · Outlet type: straight · Thread outlet: M6x1 (standard thread) · Hole pattern [mm]: 44 x 44 · Camouflaged: No
EUR 210,90
EUR 234,30
Collection only possible with online purchase and appointment.
