40 mm racing cylinder suitable for the following mopeds with Beta 521 engine:
- Cilo Cross 521 & 512
- Pony Cross 521
- Pony GTX 521
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. Please observe the installation direction when assembling. The piston is inserted with the arrow pointing towards the outlet on the exhaust side.
| Nominal diameter | 40 mm |
| Manufacturer | Airsal |
| Material | Aluminum |
| Surface | sandblasted |
| Displacement | 50 ccm |
| Crankshaft stroke | 39 mm |
| Area of application | Tuning |
| Ø cylinder neck | 46 mm |
| Ø outlet inside | 21 mm |
| Ø piston pin (B) | 12 mm |
| Hole pattern [mm] | 48 x 48 |
| Decompressor | No |
| Outlet type | straight |
| Hole spacing outlet | 38 mm |
| Number of fixing points | 4 pcs |
| Thread outlet | M6x1 (standard thread) |
| Camouflaged | No |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
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GPO 40 mm cylinder head "original" | Pony GTX, Cross 521 (A8113)
Manufacturer: GPO · Surface: varnished · Material: Aluminum · Ø cylinder: 40 mm · Total length: 120 mm · Width: 108 mm · Hole pattern [mm]: 48 x 48 · Candle thread: short · Number of fixing points: 4 pcs · Ø screw holder: 6.5 mm · Pony OEM number: A8113
76,40 EUR
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GPO 40 mm cylinder head "Racing" | Pony GTX, Cross 521 (A8113)
Manufacturer: GPO · Material: Aluminum · Surface: varnished · Width: 108 mm · Ø cylinder: 40 mm · Total length: 120 mm · Ø screw holder: 6.5 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 48 x 48 · Camouflaged: Yes · Alternative version of the Pony OEM number: A8113
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GPO 40 mm cylinder (without piston & gasket set) "original" | Pony GTX, Cross 521
Manufacturer: GPO · Displacement: 50 ccm · Material: Gray cast iron · Nominal diameter: 40 mm · Ø cylinder neck: 45 mm · Hole spacing outlet: 39 mm · Hole spacing for cylinder mounting: 48 mm · Number of fixing points: 4 pcs · Area of application: Original · Outlet type: straight
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Nominal diameter: 40 mm · Manufacturer: GPO · Material: Gray cast iron · Displacement: 50 ccm · Ø cylinder neck: 45 mm · Ø outlet inside: 21.5 mm · Ø piston pin (B): 12 mm · Outlet type: straight · Hole spacing outlet: 39 mm · Thread outlet: M6x1 (standard thread) · Hole pattern [mm]: 48 x 48 · Area of application: Original
176,40 EUR
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