
38 mm aluminum cylinder with steel liner, suitable for Sachs 504, 505 & 508 engines, which were installed in Hercules Prima M, 2, 3, 4, 5, Optima and Pony City mopeds / mopeds, among others.
| Material | Aluminum |
| Displacement | 50 ccm |
| Nominal diameter | 38 mm |
| Ø cylinder neck | 52 mm, 44.4 mm |
| Ø Outlet outside | 25.9 mm |
| Ø outlet inside | 22.4 mm |
| Inlet window | 23.2 x 12.8 |
| Thread inlet | M6x1 (standard thread) |
| Number of fixing points | 4 pcs |
| Ø piston pin (B) | 12 mm |
| Outlet type | straight |
| Hole pattern [mm] | 55 x 55 |
| Decompressor | M10x1.5 |
| Hole spacing inlet | 31.5 mm |
| Sachs | 504 (without pedal shaft) 505 (with pedal shaft) - 1A (AT), 2A (HG) |
| Hercules | Great - 2, 3, 4, 5, Optima |
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Airsal 43.5 mm cylinder kit incl. mounting parts | Sachs 504, 505, 535, 508
Nominal diameter: 43.5 mm · Manufacturer: Airsal · Material: Aluminum · Camouflaged: No · Surface: sandblasted · Crankshaft stroke: 44 mm · Ø cylinder neck: 50 mm · Ø Outlet outside: 26 mm · Ø Inlet inside: 14 mm · Hole spacing inlet: 31 mm · Number of fixing points: 4 pcs · Ø piston pin (B): 12 mm · Inlet window: 23.8 x 14.8 · Thread inlet: M6x1 (standard thread) · Hole pattern [mm]: 56 (61) x 56 · Outlet type: clamped · Decompressor: M10x1.5 · Area of application: Tuning
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Athena 45 mm cylinder kit incl. mounting parts | Sachs (504), 505, 508
Nominal diameter: 45 mm · Manufacturer: Athena · Material: Aluminum · Camouflaged: No · Surface: sandblasted · Crankshaft stroke: 44 mm · Ø piston pin (B): 12 mm · Ø cylinder neck: 51.7 mm · Ø Outlet outside: 25.9 mm · Ø Inlet inside: 14.3 mm · Ø outlet inside: 19.5 mm · Number of fixing points: 4 pcs · Inlet window: 23.4 x 12.6 · Thread inlet: M6x1 (standard thread) · Hole spacing outlet: 50 mm · Area of application: Tuning · Outlet type: clamped · Outlet type: straight · Thread outlet: M8x1.25 (standard thread) · Hole pattern [mm]: 56 (61) x 56 · Decompressor: M10x1.5 · Hole spacing inlet: 31.5 mm
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Airsal 14 mm intake manifold angled | Sachs 504, 505
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38 mm cylinder kit 30 km/h version | Sachs 504, 505, (508)
Nominal diameter: 38 mm · Material: Aluminum · Displacement: 50 ccm · Ø cylinder neck: 49.4 mm · Ø cylinder neck: 51.9 mm · Ø Outlet outside: 25.9 mm · Ø outlet inside: 22.5 mm · Hole spacing inlet: 31.5 mm · Number of fixing points: 4 pcs · Ø piston pin (B): 12 mm · Inlet window: 18 x 13.4 · Thread inlet: M6x1 (standard thread) · Hole pattern [mm]: 55 x 55 · Outlet type: straight · Decompressor: M10x1.5
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