
Replacement piston suitable for the 40 mm racing cylinder for the following mopeds / mopeds with Beta 521 engine:
Cylinder kits, piston rings and alternative pistons can be found in the accessories section.
Quality product from the Spanish manufacturer Airsal.
| Manufacturer | Airsal |
| Number of piston rings (F) | 2 pcs |
| Nominal diameter | 40 mm |
| Weight piston kit | 87 g |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
Accessories & related products
Airsal 40 mm cylinder kit | Beta 521
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 · Hole spacing outlet: 38 mm · Number of fixing points: 4 pcs · Outlet type: straight · Ø piston pin (B): 12 mm · Hole pattern [mm]: 48 x 48 · Thread outlet: M6x1 (standard thread) · Decompressor: No · Area of application: Tuning
232,90 EUR
Airsal tuning set 43.5 mm | Beta 521 engine
Manufacturer: Airsal · Manufacturer: Dell'Orto · Manufacturer: NGK · Manufacturer: SITO · Manufacturer: swiing · Camouflaged: No · Displacement: 60 ccm · Nominal diameter: 60 mm · Area of application: Tuning · Outlet type: straight · Ø piston pin (B): 12 mm
466,00 EUR
Meteor piston 41 mm | Beta 521 & 512
Nominal diameter: 41 mm · Manufacturer: Meteor · Ø outside piston (A): 40.94 mm · Compression height (C): 28 mm · Curvature (D): 4 mm · Total piston height (E): 52 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Ø piston pin (B): 12 mm · Piston ring height: 1.5 mm · Weight piston kit: 90 g
87,30 EUR
40 mm cylinder kit original engine | Beta 521 & 512
Manufacturer: Pony · Material: Gray cast iron · Displacement: 50 ccm · Crankshaft stroke: 39 mm · Nominal diameter: 40 mm · Number of fixing points: 4 pcs · Outlet type: straight · Ø piston pin (B): 12 mm · Thread outlet: M6x1 (standard thread) · Area of application: Original
215,50 EUR
swiing® revival gasket set cylinder original engine | Beta 521, 512
Number of components: 3 pcs · Manufacturer: swiing® revival parts · Material: Copper · Material: Sealing carton · Material: Sealing paper · Material: Sheet metal (steel) · Ø outlet inside: 22 mm · Ø cylinder: 40 mm · Hole spacing outlet: 40 mm · Hole pattern [mm]: 48 x 48 mm · Decompressor: Yes · Area of application: Original
16,20 EUR
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Brake cable Ø 1.8 mm x 220 cm (pear-shaped nipple)
Ø Stranded wire: 1.8 mm · Cable length: 2200 mm · Nipple shape: Pears · Ø nipple: 3.5 mm · Ø nipple: 6 mm · Nipple length: 10 mm · Number of components: 1 pcs · Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Area of application: Standard
2,80 EUR
swiing® revival gasket set | Pony / Cilo Beta 521
Manufacturer: swiing® revival parts · Material: Copper · Material: Sealing carton · Material: Sealing paper · Area of application: Standard · Ø outlet inside: 21.6 mm · Hole spacing inlet: 35 mm · Number of components: 10 pcs · Hole pattern [mm]: 48 x 48 · Hole spacing outlet: 38 mm · Decompressor: Yes
34,40 EUR







