43.5 mm racing cylinder incl. GPO cylinder head suitable for your Pony GTX and Cilo & Pony Cross moped / moped with Beta 512 or 521 engine.
The 57 cc racing cylinder made of aluminum with nickel-silicon carbide (colloquially known as Nikasil) coating stands for high reliability and a long service life.
The matching tuning cylinder head impresses with its clean workmanship and precise fit. In combination with the 0.5 mm thick head gasket from Airsal, this results in a crushing edge of just 1.2 mm. Compared to the racing cylinder with original head, this not only optimizes the combustion chamber geometry thanks to the matching diameter, but also improves combustion due to the smaller crushing edge. This ensures more turbulence in the combustion chamber – and therefore noticeably better performance and efficiency.
Hole pattern [mm]: 48 x 48 · Manufacturer: Airsal · Material: Aluminum · Surface: sandblasted · Displacement: 57 ccm · Crankshaft stroke: 39 mm · Nominal diameter: 43.5 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 21 mm, 18 mm · Ø piston pin (B): 12 mm · Outlet type: straight · Hole spacing outlet: 38 mm · Thread outlet: M6x1 (standard thread) · Number of fixing points: 4 pcs · Camouflaged: No · Area of application: Tuning
Alternative version of the Pony OEM number: A8113 · Manufacturer: GPO · Material: Aluminum · Surface: varnished · Ø cylinder: 43.5 mm · Camouflaged: Yes · Number of fixing points: 4 pcs · Ø screw holder: 6.5 mm · Hole pattern [mm]: 48 x 48 · Candle thread: short · Total length: 120 mm · Width: 108 mm · Area of application: Tuning, Racing
| Nominal diameter | 43.5 mm |
| Manufacturer | Airsal |
| Camouflaged | No |
| Material | Aluminum |
| Surface | Nickel silicon carbide (colloquially known as Nikasil) |
| Displacement | 57 ccm |
| Crankshaft stroke | 39 mm |
| Ø cylinder neck | 45.5 mm |
| Ø Outlet outside | 21 mm |
| Hole pattern [mm] | 48 x 48 |
| Ø piston pin (B) | 12 mm |
| Outlet type | straight |
| Hole spacing outlet | 38 mm |
| Thread outlet | M6x1 (standard thread) |
| Number of fixing points | 4 pcs |
| Area of application | Tuning |
| Alternative version of the Pony OEM number | A8113, A8092 |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
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