Forged and sealed 41 mm cylinder kit with 12 mm piston pin including gaskets and studs.
This tuning cylinder without sealing fits Puch X30 Velux and Puch X30 NG-2AH mopeds.
Please select the desired piston in the selection field.
Picture 1 shows the Meteor piston with molybdenum coating manufactured for swiing. This is characterized by its high-quality and precise workmanship.
The piston is more durable and provides minimal additional power compared to the standard piston, which can be seen in Figure 2.
Attention: On Velux engines, the small slot at the sealing surface to the cylinder base must be filled in to ensure that the cylinder kit is tight.
We recommend using the Wekem liquid metal for this purpose, which can be found in the accessories section.
Good, inexpensive standard spare part. GPO – GOOD PARTS ONLY.
Hole pattern [mm]: 44 x 44 · Manufacturer: GPO · Material: Gray cast iron · Surface: sandblasted · Displacement: 60 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 41 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 · Outlet type: straight · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Number of fixing points: 4 pcs · Decompressor: No · Camouflaged: No · Area of application: Tuning
Hole pattern [mm]: 44 x 44 mm · Manufacturer: GPO · Number of components: 4 pcs · Ø cylinder: 40 mm, 41 mm · Hole spacing inlet: 38 mm · Ø outlet inside: 22 mm · Hole spacing outlet: 42 mm · Decompressor: Yes · Area of application: Tuning
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Diameter: 5.95 mm · Thread type: M6x1 (standard thread) · Total length: 30 mm · Thread length: 12 mm · Strength class: 10.9
Manufacturer | GPO, swiing, Meteor Racing |
Material | Gray cast iron |
Surface | sandblasted |
Displacement | 60 ccm |
Crankshaft stroke | 43 mm |
Nominal diameter | 41 mm |
Ø cylinder neck | 43.2 mm |
Ø outlet inside | 19.4 mm |
Ø Inlet inside | 14.6 mm |
Thread inlet | M6x1 (standard thread) |
Ø piston pin (B) | 12 mm |
Outlet type | straight |
Hole spacing outlet | 42 mm |
Number of fixing points | 4 pcs |
Thread outlet | M6x1 (standard thread) |
Hole pattern [mm] | 44 x 44 |
Camouflaged | No |
Hole spacing inlet | 32 mm |
Area of application | Tuning |
Puch | ZA50 (fan-cooled) Z50 (X30 Velux) 2-speed MS, MV, MV50 3-speed VSD, DS, VZ, MC |
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WEKEM 2K liquid metal
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GPO piston 41 mm (12 mm KoBo) | Puch X30 Velux, M50, MS50, VS50, DS50, VZ50
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 · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring impact: Internal fuse (IS) · Ø piston pin (B): 12 mm · Piston weight: 85 g
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swiing® ingenious piston 41 mm (12 mm KoBo) "Racing" | Puch X30 Velux fan-cooled
Manufacturer: swiing® ingenious parts · Surface: molybdenum-coated · Nominal diameter: 41 mm · Ø outside piston (A): 40.95 mm · Ø piston pin (B): 12 mm · Compression height (C): 22.5 mm · Curvature (D): 3.5 mm · Total piston height (E): 50 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 1.5 mm · Piston weight: 94 g
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GPO piston 41 mm (12 mm KoBo) | Puch X30 Velux, M50, MS50, VS50, DS50, VZ50
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 · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring impact: Internal fuse (IS) · Ø piston pin (B): 12 mm · Piston weight: 85 g
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swiing® ingenious piston 41 mm (12 mm KoBo) "Racing" | Puch X30 Velux fan-cooled
Manufacturer: swiing® ingenious parts · Surface: molybdenum-coated · Nominal diameter: 41 mm · Ø outside piston (A): 40.95 mm · Ø piston pin (B): 12 mm · Compression height (C): 22.5 mm · Curvature (D): 3.5 mm · Total piston height (E): 50 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 1.5 mm · Piston weight: 94 g
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