43.5 mm cylinder head suitable for your Cilo Cross, Pony Cross, and GTX moped with a Beta 521 or 512 engine and the corresponding Airsal 43.5 mm racing kit.
The tuning cylinder head impresses with its high-quality workmanship and precise fit. With the 0.5 mm thick Airsal head gasket, the squish edge is only 1.2 mm. Compared to using the racing cylinder with an original head, not only is the combustion chamber geometry optimized by the matching diameter, but combustion is also improved due to the lower squish edge. This leads to greater turbulence in the combustion chamber, which increases power and efficiency.
Note: A spark plug with a long thread is required.
If you want to reduce the compression edge even further, you’ll also find a 0.3 mm-thick gasket among the accessories.
Cylinder head gaskets, the matching racing cylinder, and a carburetor kit can be found in the accessories section.
A good, affordable standard replacement part. GPO – GOOD PARTS ONLY.
Alternative to the original Pony part number: A8113
| Manufacturer | GPO |
| Material | Aluminum |
| Camouflaged | Yes |
| Area of application | Tuning, Racing |
| Surface | varnished |
| Total length | 120 mm |
| Width | 108 mm |
| Ø cylinder | 43.5 mm |
| Number of fixing points | 4 pcs |
| Candle thread | short |
| Ø screw holder | 6.5 mm |
| Hole pattern [mm] | 48 x 48 |
| Alternative version of the Pony OEM number | A8113 |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
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Airsal 43.5 mm cylinder kit Beta | Cilo Cross 521 / 512, Pony Cross 521, Pony GTX 521
Manufacturer: Airsal · Material: Aluminum · Camouflaged: No · Surface: sandblasted · Area of application: Tuning · Crankshaft stroke: 39 mm · Displacement: 58 ccm · Nominal diameter: 43.5 mm · Ø piston pin (B): 12 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 18 mm · Ø Outlet outside: 21 mm · Number of fixing points: 4 pcs · Hole spacing outlet: 38 mm · Outlet type: straight · Hole pattern [mm]: 48 x 48 · Thread outlet: M6x1 (standard thread)
EUR 237.20
swiing® ingenious intake manifold & carburetor 16 mm tuning set | Beta 521 & 512
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Ø inside: 44 mm · Thickness: 0.3 mm · Manufacturer: GPO · Material: Aluminum · Place of use: Cylinder head · Nominal diameter: 43.5 mm · Ø cylinder: 43.5 mm · Hole pattern [mm]: 48 x 48 · Alternative version of the Pony OEM number: A8098
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GPO gasket 0.5 mm cylinder head Airsal 43.5 mm cylinder | Pony GTX, Cross 521
Ø inside: 44 mm · Thickness: 0.5 mm · Manufacturer: GPO · Material: Aluminum · Place of use: Cylinder head · Nominal diameter: 43.5 mm · Ø cylinder: 43.5 mm · Hole pattern [mm]: 48 x 48 · Alternative version of the Pony OEM number: A8098
EUR 3.45
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Airsal 43.5 mm cylinder kit Beta | Cilo Cross 521 / 512, Pony Cross 521, Pony GTX 521
Manufacturer: Airsal · Material: Aluminum · Camouflaged: No · Surface: sandblasted · Area of application: Tuning · Crankshaft stroke: 39 mm · Displacement: 58 ccm · Nominal diameter: 43.5 mm · Ø piston pin (B): 12 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 18 mm · Ø Outlet outside: 21 mm · Number of fixing points: 4 pcs · Hole spacing outlet: 38 mm · Outlet type: straight · Hole pattern [mm]: 48 x 48 · Thread outlet: M6x1 (standard thread)
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swiing® ingenious 16 mm intake manifold | Beta 521, 512
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Dell'Orto 16/16 SHA carburetor hand choke | Beta 521 & 512
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GPO gasket 0.3 mm cylinder head Airsal 43.5 mm cylinder | Pony GTX, Cross 521
Ø inside: 44 mm · Thickness: 0.3 mm · Manufacturer: GPO · Material: Aluminum · Place of use: Cylinder head · Nominal diameter: 43.5 mm · Ø cylinder: 43.5 mm · Hole pattern [mm]: 48 x 48 · Alternative version of the Pony OEM number: A8098
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GPO gasket 0.5 mm cylinder head Airsal 43.5 mm cylinder | Pony GTX, Cross 521
Ø inside: 44 mm · Thickness: 0.5 mm · Manufacturer: GPO · Material: Aluminum · Place of use: Cylinder head · Nominal diameter: 43.5 mm · Ø cylinder: 43.5 mm · Hole pattern [mm]: 48 x 48 · Alternative version of the Pony OEM number: A8098
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Airsal 43.5 mm cylinder kit with GPO head | Pony GTX, Cross 521
Nominal diameter: 43.5 mm · Manufacturer: Airsal · Material: Aluminum · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Displacement: 58 ccm · Crankshaft stroke: 39 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 18 mm · Ø Outlet outside: 21 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 · Hole pattern [mm]: 48 x 48 · Camouflaged: No · Area of application: Tuning · Alternative version of the Pony OEM number: A8092 · Alternative version of the Pony OEM number: A8113
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