The legend is back! The legendary 43.5 mm Metrakit racing cylinder from days gone by has risen from the ashes like a phoenix and ignites new fire in your Puch Maxi S, N, X30 Sport NS, NL, X30 Sport NG-2A and Supermaxi moped / moped.
The aluminium cylinder with cast iron liner is an optimized replica of the original Metrakit racing cylinder. The timing has been revised compared to the original and provided with more advance, making the well-known piston sticking problem due to high heat development a thing of the past. In addition, the cylinder height has been precisely adapted so that the extra-thick base gasket previously required is now superfluous.
This GPO racing cylinder is one of the strongest and most powerful in its class and has been extensively tested. It impresses with ample torque across the entire power band and offers an impressively powerful performance. Thanks to the optimizations compared to the original, the cylinder also achieves a noticeably higher engine speed, which ensures even more power and driving pleasure.
To get the full power out of this tuning cylinder, we recommend at least a 15 mm carburetor. However, you can achieve significantly more power with a 17 mm carburetor. Thanks to the generous 19 mm intake, you have sufficient scope for optimum power delivery.
Manufacturer: GPO · Nominal diameter: 43.5 mm · Material: Aluminum · Ø outside piston (A): 43.46 mm · Ø piston pin (B): 12 mm · Compression height (C): 22.9 mm · Curvature (D): 3.1 mm · Total piston height (E): 49.55 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring, L-ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.55 mm, 2 mm · Thick piston ring: 1.9 mm, 1.8 mm · Weight piston kit: 87 g
Manufacturer: GPO · Material: Sealing carton, Aluminum, Graphite / Graphite · Number of components: 4 pcs · Thickness: 0.4 mm, 0.5 mm, 2.6 mm · Ø cylinder: 43.5 mm, 45 mm · Hole spacing inlet: 38 mm · Ø outlet inside: 26.5 mm · Hole spacing outlet: 42 mm · Hole pattern [mm]: 44 X 44
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 |
| Material | Aluminum, Gray cast iron |
| Surface | varnished |
| Displacement | 64 ccm |
| Crankshaft stroke | 43 mm |
| Nominal diameter | 43.5 mm |
| Ø cylinder neck | 47.8 mm |
| Hole spacing inlet | 38 mm |
| Ø outlet inside | 26 mm |
| Ø Inlet inside | 19 mm |
| Ø piston pin (B) | 12 mm |
| Thread inlet | M6x1 (standard thread) |
| Hole spacing outlet | 42 mm |
| Hole pattern [mm] | 44 x 44 |
| Outlet type | straight |
| Thread outlet | M6x1 (standard thread) |
| Number of fixing points | 4 pcs |
| Camouflaged | No |
| Area of application | Tuning, Racing |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
Ratings
Accessories & related products
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swiing® ingenious 17 mm carburetor set camouflaged | Puch E50
Manufacturer: swiing® ingenious parts · Camouflaged: Yes · Component group Carburetor: Carburetor complete · Carburetor type: SRF · Nominal diameter: 17 mm · Ø Air filter connection: 27.5 mm · Mixed oil connection: No · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Nozzle block: 2.2 · Nozzle size: 74 · Mounting type: Plug connection clamped · Hole spacing inlet: 38 mm · Clamping screw torque (max.): 4 N/m · Area of application: Racing · Area of application: Tuning
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GPO piston rings 43.5 mm "GPO Metrakit" (pair) | Puch
Manufacturer: GPO · Diameter: 43.5 mm · Nominal diameter: 43.5 mm · Thick piston ring: 1.7 mm · Piston ring mold: L-ring · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring impact: Internal fuse (IS) · Height: 1.5 mm
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GPO Ø 45 mm "Metrakit" cylinder kit | Puch
Nominal diameter: 45 mm · Manufacturer: GPO · Material: Aluminum · Material: Gray cast iron · Surface: varnished · Displacement: 70 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 47.8 mm · Ø outlet inside: 26 mm · Ø Inlet inside: 19 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 38 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 · Camouflaged: No · Area of application: Racing · Area of application: Tuning
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