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Top-of-the-line racing kit with a 70 cc displacement, compatible with your Puch Maxi S / N, X30 Sport NS / NL, X30 Sport NG-2A, or Supermaxi moped.
The 45 mm tuning cylinder features a large intake and exhaust port as well as optimized valve timing. When combined with a 17 mm carburetor, it delivers significantly more power than the stock cylinder.
Compared to other products on the market, the sealing surface at the exhaust port has been enlarged and milled. This also allows for the installation of a 28 mm exhaust manifold, which further increases power significantly.
Externally, the racing cylinder is virtually indistinguishable from the original. The cast-in “CH12” and the cooling fins, designed in the original style, ensure a discreet appearance and reliably protect against prying eyes—especially from race officials.
In addition to the cylinder, the package includes the complete piston kit, all gaskets, the studs, and detailed installation instructions. If you’d like the complete set, select this option in the drop-down menu to also receive the matching cylinder head.
A piston with only one ring offers less friction and higher RPMs at the expense of durability and compression, while two rings provide a better seal, more torque, and greater longevity, though at the cost of slightly lower RPMs.
Note:
This racing kit should be used with at least a 22 mm exhaust (double-bend) or a 22 mm header to ensure proper exhaust gas flow and prevent heat buildup. Please observe the installation direction during assembly. The piston is installed with the arrow pointing toward the exhaust on the exhaust side.
You can find additional compatible components for your tuning project, as well as cylinder kits with different displacement capacities, in the accessories section.
A sophisticated product from the premium swiing® brand, designed to meet the highest standards.
Hole pattern [mm]: 44 x 44 · Inlet window: 23.6 / 21.2 x 14.7 mm · Manufacturer: swiing® ingenious parts · Material: Aluminum · Surface: sandblasted · Displacement: 70 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 45 mm · Ø cylinder neck: 48 mm · Ø outlet inside: 25 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 · Camouflaged: Yes · Area of application: Tuning
| Nominal diameter | 45 mm |
| Manufacturer | swiing® ingenious parts |
| Material | Aluminum |
| Surface | sandblasted |
| Displacement | 70 ccm |
| Crankshaft stroke | 43 mm |
| Ø piston pin (B) | 12 mm |
| Ø cylinder neck | 48 mm |
| Number of fixing points | 4 pcs |
| Inlet window | 23 / 21 x 14 mm |
| Ø outlet inside | 25 mm |
| Thread inlet | M6x1 (standard thread) |
| Area of application | Tuning |
| Decompressor | No |
| Camouflaged | Yes |
| Hole spacing outlet | 42 mm |
| Hole pattern [mm] | 44 x 44 |
| Outlet type | straight |
| Hole spacing inlet | 38 mm |
| Thread outlet | M6x1 (standard thread) |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
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