Tuning kit with a 64 ccm displacement, compatible with all Puch Maxi S and N mopeds equipped with an E50 engine as well as the air-cooled ZA50 variant.
This racing kit, featuring an improved replica of the legendary Metrakit racing cylinder, is ideal for enthusiasts who value quality, durability, and—above all—performance. The individual components are finely tuned to work together and guarantee optimal power delivery.
Unlike the original from that era, the aluminum cylinder with a gray cast iron liner has been extensively redesigned to enable a seamless plug-and-play tuning experience. This GPO racing cylinder is among the strongest and most powerful in its class and delivers impressive torque across the entire power band.
In the selection field, you can choose between an intake manifold for E50 or ZA50 engines.
When you purchase this complete set, you’ll receive a substantial discount off the retail price of the individual parts.
Note: If you own a Puch Maxi N, you should also select an optional exhaust clamp, as this is not included as standard with the cigar-shaped muffler. Please pay attention to the installation direction during assembly. The piston is installed with the arrow pointing toward the exhaust on the exhaust side.
You can find more tuning kits in the accessories section.
A good, affordable standard replacement part. GPO – GOOD PARTS ONLY.
Camouflaged: No · Manufacturer: GPO · Material: Aluminum, Gray cast iron · Surface: varnished · Displacement: 64 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 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 · Area of application: Tuning, Racing
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 · Nominal diameter (thread): 6 mm
Hole pattern [mm]: 44 x 44 · Manufacturer: GPO · Material: Aluminum · Surface: varnished · Ø cylinder: 44 mm · Camouflaged: Yes · Number of fixing points: 4 pcs · Candle thread: short · Decompressor: No · Total length: 135 mm · Width: 125 mm · Height: 55 mm · Area of application: Tuning
Nozzle block: 2.17 · Nozzle size: 62 · Manufacturer: swiing® ingenious parts · Camouflaged: Yes · Material: Aluminum · Carburetor type: SRE · Nominal diameter: 15 mm · Ø Internal connection: 20 mm · Ø Inside entrance: 15 mm · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: No · Vacuum connection: No · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Mounting type: Plug connection clamped · Clamping screw torque (max.): 4 N/m · Total length: 66 mm · Width: 50 mm · Height: 95 mm · Area of application: Tuning · Component group Carburetor: Carburetor complete · Alternative version of the Puch OEM number: 349.9.15.300.0, 349.6.15.400.0, 349.7.15.700.0, 349.4.15.500.0, 349.4.15.000.0, 349.4.15.300.0, 349.1.15.100.0, 349.8.15.400.0, 349.2.15.800.0
Manufacturer: GPO · Camouflaged: Yes · Color: black · Filter type: Racing screen · Ø Internal connection: 20 mm · Area of application: Tuning, Racing
Nozzle size: 64, 66, 68, 70, 72, 74 · Manufacturer: swiing® revival parts · Material: Brass · Quantity: 6 pcs · Carburetor type: SRE, SRF, SRA (1/11/35) Velux, SRA (1/11/31) Velux, SRC · Nozzle type: Main nozzle · Nozzle thread: M3.5x0.6 (standard thread) · Total length: 6 mm · Drive: Slot · Component group Carburetor: Spraying
Manufacturer: swiing® ingenious parts · Camouflaged: Yes · Material: Aluminum · Ø inside: 15 mm · Ø External connection: 20 mm · Mounting type: Screws · Hole spacing inlet: 38 mm · Number of fixing points: 2 pcs · Total height: 53 mm · Height flange center hole: 43 mm · Total length: 46 mm · Area of application: Tuning · Puch OEM number: 349.2.15.330.1, 349.2.15.130.1
| Puch | E50 |
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