Forged Wössner high-performance piston for the 47 mm Gilardoni italkit Puch cylinder kit, when operated with a housing diaphragm inlet (GME).
Please note: This piston cannot be used with conventional Gilardoni italkit cylinders that are operated with a cylinder diaphragm inlet (ZME).
GME forged piston developed by MBR, featuring a 1 mm rectangular piston ring with internal locking (IS), which is very commonly used in the moped cross and moped cup scenes.
Optimal material composition, a flow-optimized shape, and generous lubrication pockets above the piston pin characterize this high-quality racing piston.
You can find the detailed dimensions of the piston according to the technical drawing in the details section. You can also find information about common piston rings, their clearance, and retaining 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 D (47.03 mm): 46.97 mm piston
Piston rings, piston pins, and piston pin retainers are included in the delivery.
You can find compatible components such as cylinder kits, needle bearings, stroke 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) | 46.95 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 |
| Ø piston pin (B) | 12 mm |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 1 mm |
| Weight piston kit | 97 g |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
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