38 mm tuning cylinder made of aluminum with Nikasil coating and 50 cc displacement suitable for mopeds / mopeds with Sachs 503 2AL, AAL, 2BL, ABL CH engine.
The racing kit offers a performance increase over the entire speed range, with a focus on low speeds and torque. Compared to the original cylinder, this racing cylinder has had the seal removed and the intake enlarged. The overflow channels have also been enlarged and the piston skirt has been optimized to improve the timing. The exhaust port has also been designed at a favorable angle.
In addition to the piston, the scope of delivery also includes the matching piston rings, clips, pins, stud bolts and the required gaskets for the base, intake and cylinder head.
Cylinder material: Cast aluminum with Nikasil coating
Piston material: Cast aluminum
Bore: 38 mm
Capacity: 49 cm³
Ø Cylinder neck: 45.5 mm
Ø Exhaust inside: 18.5 mm
Ø Exhaust outside: 25.8 mm
Inlet hole spacing: 32 mm
Inlet thread: M6 x 0.8 mm
Ø inlet: 14 mm
Cylinder base hole pattern: 40 x 60 mm
Ø stud bolt hole: 6.9 mm
Cylinder cover hole pattern: 37 x 37 mm
Piston pin: 12 mm
Note: For Sachs 503 ABL engines, the engine housing may need to be ground out slightly in the area of the cylinder neck.
Matching cylinder heads and corresponding add-on parts for the replacement cylinder can be found in the accessories section.
Branded product from the manufacturer AKOA.
Details
| Manufacturer | AKOA |
| Material | Aluminum |
| Surface | nikasil-coated |
| Displacement | 50 ccm |
| Crankshaft stroke | 43 mm |
| Nominal diameter | 38 mm |
| Ø cylinder neck | 45.5 mm |
| Hole spacing inlet | 32 mm |
| Ø Outlet outside | 25.8 mm |
| Ø outlet inside | 18.5 mm |
| Ø Inlet inside | 14 mm |
| Ø piston pin (B) | 12 mm |
| Thread inlet | M6x1 (standard thread) |
| Area of application | Standard |
| Number of fixing points | 4 pcs |
| Hole pattern [mm] | 40 x 60 / 37 x 37 |
| Outlet type | clamped |
| Decompressor | No |
Suitable for the following models
| Sachs | 503 - AAL, ABL, 2AL / 2BL |
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