
40 mm racing cylinder suitable for the following mopeds with Beta 521 engine:
The aluminum racing kit with Nikasil coating is an extremely reliable and durable cylinder.
Ø Piston pin: 12 mm
Scope of delivery according to figure 1.
Note: The stud bolts supplied for the exhaust have a strength of 5.6. We recommend replacing these with item 10126 with increased strength in the accessories.
| Manufacturer | Airsal |
| Material | Aluminum |
| Camouflaged | No |
| Surface | sandblasted |
| Displacement | 50 ccm |
| Crankshaft stroke | 39 mm |
| Nominal diameter | 40 mm |
| Ø cylinder neck | 46 mm |
| Ø outlet inside | 21 mm |
| Number of fixing points | 4 pcs |
| Ø piston pin (B) | 12 mm |
| Outlet type | straight |
| Hole spacing outlet | 38 mm |
| Thread outlet | M6x1 (standard thread) |
| Hole pattern [mm] | 48 x 48 |
| Decompressor | No |
| Area of application | Tuning |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
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