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 |
| Camouflaged | No |
| Area of application | Tuning |
| Surface | sandblasted |
| Displacement | 50 ccm |
| Crankshaft stroke | 39 mm |
| Ø cylinder neck | 46 mm |
| Ø outlet inside | 21 mm |
| Hole pattern [mm] | 48 x 48 |
| 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) |
| Decompressor | No |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
Ratings
Accessories & related products
GPO Ø 40 mm cylinder head "Original" | Pony GTX, Cross 521 (A8113)
Total length: 120 mm · Manufacturer: GPO · Material: Aluminum · Surface: varnished · Ø cylinder: 40 mm · Width: 108 mm · Ø screw holder: 6.5 mm · Candle thread: short · Hole pattern [mm]: 48 x 48 · Number of fixing points: 4 pcs · Pony OEM number: A8113
CHF 64.90
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GPO Ø 40 mm cylinder head "Racing" | Pony GTX, Cross 521 (A8113)
Total length: 120 mm · Manufacturer: GPO · Material: Aluminum · Surface: varnished · Ø cylinder: 40 mm · Width: 108 mm · Camouflaged: Yes · Ø screw holder: 6.5 mm · Candle thread: short · Hole pattern [mm]: 48 x 48 · Number of fixing points: 4 pcs · 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 (A8092)
Nominal diameter: 40 mm · Manufacturer: GPO · Material: Gray cast iron · Area of application: Original · Surface: blank · Displacement: 50 ccm · Ø cylinder neck: 45 mm · Number of fixing points: 4 pcs · Hole spacing for cylinder mounting: 48 mm · Outlet type: straight · Hole spacing outlet: 39 mm
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GPO 40 mm cylinder kit "Original" | Pony GTX, Cross 521 (A8092)
Nominal diameter: 40 mm · Manufacturer: GPO · Material: Gray cast iron · Area of application: Original · Surface: blank · Displacement: 50 ccm · Ø cylinder neck: 45 mm · Ø outlet inside: 21.5 mm · Hole pattern [mm]: 48 x 48 · Ø piston pin (B): 12 mm · Outlet type: straight · Hole spacing outlet: 39 mm · Thread outlet: M6x1 (standard thread)
CHF 149.90
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