Forged Wössner high-performance piston for the 47 mm Gilardoni italkit cylinder kit / Gilardoni italkit for your Puch moped.
ZME forged piston developed by MBR, featuring a 1 mm rectangular piston ring with internal locking (IS), which is very commonly used in the Mofacross / Mofacup scene.
Optimal material structure, a flow-optimized shape, and generously sized intake ports characterize this high-quality racing piston.
You can find the detailed dimensions of the piston according to the technical drawing in the product details. You can also find information about common piston rings, their clearances, and retention methods in the legend accompanying the images.
The molybdenum coating, when combined with oil, provides technologically advanced wear protection with excellent sliding properties.
Recommended piston size (coating corresponds to +0.01 mm to +0.02 mm):
Gilardoni italkit Cylinder A (47.00 mm): 46.94 mm piston (in exceptional cases, e.g., when using ASPEN: 46.93 mm piston)
Gilardoni italkit Cylinder B (47.01 mm): 46.95 mm piston
Gilardoni italkit Cylinder C (47.02 mm): 46.96 mm piston
Gilardoni italkit Cylinder C (47.02 mm): 46.97 mm piston
Piston rings, piston pins, and piston pin retainers are included in the package.
You can find matching components such as cylinder kits, needle bearings, lift plates, carburetors, air filters, etc., in the accessories section.
A quality product from the German manufacturer Wössner.
| Nominal diameter | 47 mm |
| Manufacturer | Wössner, MBR |
| Surface | molybdenum-coated |
| Ø outside piston (A) | 46.97 mm |
| Compression height (C) | 21.5 mm |
| Curvature (D) | 2.63 mm |
| Total piston height (E) | 48.15 mm |
| Number of piston rings (F) | 1 pcs |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Internal fuse (IS) |
| Ø piston pin (B) | 12 mm |
| Weight piston kit | 93 g |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
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