Cylinder kit suitable for your Hercules Prima M, 2, 3, 4, 5 or Optima moped / moped with Sachs 505, 535 and 504 / 508 (with modifications) engine
.Thanks to the large intake, the transfer ports and the exhaust, this racing kit ensures a considerable increase in performance.
The piston is fitted with the arrow pointing towards the exhaust.
Scope of delivery according to figure 1.
Notes:
- Always use spark plugs with a long thread.
- Adjustments must be made to the cylinder on the 504 / 508 engines (42 mm stroke): Adaptation of cylinder base and gasket according to Figure 5.
| Manufacturer | Athena |
| Material | Aluminum |
| Area of application | Tuning |
| Surface | sandblasted |
| Displacement | 50 ccm |
| Crankshaft stroke | 44 mm |
| Nominal diameter | 38 mm |
| Hole spacing inlet | 31.5 mm |
| Ø cylinder neck | 51.7 mm |
| Ø outlet inside | 28 mm |
| Camouflaged | No |
| Inlet window | 23.4 x 13 |
| Hole spacing outlet | 50 mm |
| Thread inlet | M6x1 (standard thread) |
| Hole pattern [mm] | 56 (61) x 56 |
| Ø piston pin (B) | 12 mm |
| Outlet type | straight, clamped |
| Decompressor | M10x1.5 |
| Thread outlet | M8x1.25 (standard thread) |
| Number of fixing points | 4 pcs |
| Sachs | 505 (with pedal shaft) - 1A (AT) , 2A (HG) 508 535 |
| Hercules | Great - 2 , 3 , 4 , 5 , Optima |
Ratings
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Athena 38 mm cylinder kit without mounting parts | Sachs 504, 505, 508, 535
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