
GPO 45 mm tuning cylinder suitable for various Puch mopeds (Puch Maxi S / N, Puch X30 Sport NS / NL, Puch X30 NG-2A, as well as Puch Supermaxi).
In order to get the full power out of the cylinder, a racing exhaust and a larger carburetor should be fitted.
The matching stud bolts for the intake and exhaust can be found in the accessories.
Scope of delivery as shown in Figure 1.
This racing kit is also offered in other stores under the names DMP, PSR, Power One or Akoa. However, it is actually just a good, inexpensive standard replacement part. GPO – GOOD PARTS ONLY.
| Nominal diameter | 45 mm |
| Manufacturer | GPO |
| Material | Aluminum |
| Surface | sandblasted |
| Displacement | 70 ccm |
| Crankshaft stroke | 43 mm |
| Ø cylinder neck | 47.8 mm |
| Ø outlet inside | 23.4 mm |
| Inlet window | 21.4 x 13.5 |
| Ø piston pin (B) | 12 mm |
| Thread inlet | M6x1 (standard thread) |
| Hole spacing inlet | 38 mm |
| Number of fixing points | 4 pcs |
| Outlet type | straight |
| Hole spacing outlet | 42 mm |
| Thread outlet | M6x1 (standard thread) |
| Hole pattern [mm] | 44 x 44 |
| Decompressor | No |
| Camouflaged | No |
| Area of application | Tuning |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
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GPO 45 mm cylinder head tuning | Puch Maxi S, N / X30 NS, NL, N-2AH
Manufacturer: GPO · Material: Aluminum · Surface: sandblasted · Ø cylinder: 45 mm · Width: 125 mm · Height: 55 mm · Total length: 135 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No · Camouflaged: Yes · Area of application: Tuning
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swiing® revival stud bolt M6x38 inlet/outlet galvanized (10.9 strength)
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Diameter: 5.9 mm · Total length: 38 mm · Strength class: 10.9 · Thread type: M6x1 (standard thread) · Thread length: 11 mm · Thread length: 19 mm
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swiing® ingenious 15 mm carburetor set camouflaged | Puch E50
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swiing® ingenious needle roller bearing 12/15/14.2 original silver cage
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swiing® ingenious resonance exhaust set Ø 28 / 70 mm | Puch Maxi, X30 Sport
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GPO 45 mm cylinder head tuning | Puch Maxi S, N / X30 NS, NL, N-2AH
Manufacturer: GPO · Material: Aluminum · Surface: sandblasted · Ø cylinder: 45 mm · Width: 125 mm · Height: 55 mm · Total length: 135 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No · Camouflaged: Yes · Area of application: Tuning
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Flame tube 28 mm chrome | Puch Maxi S, N / X30 Sport
Manufacturer: Made in Portugal · Material: Steel · Color: Chrome · Surface: chrome-plated · Ø inside: 24 mm · Mounting type: Stud bolts & nuts · Ø outside: 28 mm · Total length: 295 mm · Number of fixing points: 2 pcs · Hole spacing outlet: 42 mm
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Manufacturer: swiing® ingenious parts · Material: Aluminum · Material: Steel · Cheek type: Full cheeks · Crankshaft stroke: 43 mm · Connecting rod length center-center: 90 mm · Total length of crankpin on clutch side: 74 mm · Weight: 968 g · Total length crankpin ignition side: 66 mm · Ø crank webs: 69.9 mm · Ø piston pin (B): 12 mm · Ø Connecting rod eye: 15 mm · Ø Bearing seat (clutch side): 17 mm · Thread type: MF10x1 (fine pitch thread) · Ø Bearing seat (ignition side): 17 mm · Thread length: 11 mm · Thread length: 15 mm · Dimension needle bearing: 12 / 15 x 14.2 mm (axe 12) · Wide crank webs: 34 mm · Length 1st paragraph: 9 mm · Length 2nd paragraph: 14.5 mm · Length 3rd paragraph: 25 mm · Ø 1st step (on the coupling side): 22 mm · Ø 2nd shoulder (on the clutch side): 17 mm · Ø 3rd step (on the clutch side): 15 mm · Length of shoulder (ignition side): 26.3 mm · Number of gears: 1 pcs · Area of application: High End · Area of application: Racing · Area of application: Tuning
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swiing® ingenious 17 mm SRF carburetor camouflaged | Puch Maxi, Supermaxi, X30 NS / NL
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GPO 45 mm cylinder head Racing high-compression | Puch Maxi S, N / X30 NS, NL, N-2AH
Manufacturer: GPO · Material: Aluminum · Surface: sandblasted · Ø cylinder: 45 mm · Width: 125 mm · Height: 55 mm · Ø screw holder: 7.4 mm · Total length: 135 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No · Area of application: Tuning
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Manufacturer: swiing® ingenious parts · Material: Aluminum · Ø inside: 17 mm · Mounting type: Stud bolts & nuts · Ø External connection: 23 mm · Hole spacing inlet: 38 mm · Total length: 38 mm · Number of fixing points: 2 pcs · Height flange center hole: 42 mm · Total height: 53.5 mm · Camouflaged: Yes · Area of application: Performance · Area of application: Racing · Area of application: Tuning
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