Racing cylinder of the Athena brand for Sachs 504 (with adaptations), 505 & 508 engines, which were installed on Hercules Prima M, 2, 3, 4, 5 and Optima mopeds / mopeds, among others.
Thanks to the large intake, overflow and exhaust, this tuning cylinder provides a considerable increase in performance.
Technical data cylinder:
- Ø inner exhaust flange: 22 mm
- Ø connection exhaust flange: 26 mm
- Ø cylinder neck: 51.6 mm
- Stroke: 44 mm
- Bore: 48.0 mm
- Thread for decompressor: M10 x 1.5 mm
The intake manifold is not included in the scope of delivery
Notes:
Plugs with long thread must be used.
The following modifications must be made to the cylinder on Swiss 504 engines (42 mm stroke):
- Adjust the cylinder base and gasket as shown in Figure 5 .
- The cylinder base must be turned off so that the compression is adjusted again due to the shorter stroke, we recommend setting a crushing edge of 0.8 - 1.0 mm.
- On models with an external clutch lever, the intake must be extended, otherwise the carburetor may come into contact with the clutch lever.
Quality product from the Italian manufacturer Athena.
Details
| Manufacturer | Athena |
| Material | Aluminum |
| Surface | sandblasted |
| Crankshaft stroke | 44 mm |
| Nominal diameter | 48 mm |
| Ø cylinder neck | 51.6 mm |
| Ø piston pin (B) | 12 mm |
| Number of fixing points | 4 pcs |
| Outlet type | clamped |
| Decompressor | M10x1.5 |
| Camouflaged | No |
| Area of application | Tuning |
Suitable for the following models
| Sachs | 505 (mit Tretwelle) - 1A (AT), 2 A (HG) 508 - 1 A |
| Hercules | Prima - 2, 3, 4, 5, Optima |
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Collection only possible with online purchase and appointment.
