
40.0 mm piston with two 1.5 mm rectangular piston rings with internal locking (IS) for Cilo Cross 521 & 512, Pony Cross 521, Pony GTX 521 mopeds / mopeds.
The detailed dimensions of the piston according to the technical drawing can be found in the details. You can also find out about the relevant piston rings, their stems and locking types on the legend in the pictures.
| Manufacturer | Meteor |
| Nominal diameter | 40 mm |
| Ø outside piston (A) | 39.93 mm |
| Compression height (C) | 27.9 mm |
| Curvature (D) | 4 mm |
| Total piston height (E) | 52 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | Rectangular ring |
| Ø piston pin (B) | 12 mm |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 1.5 mm |
| Weight piston kit | 83 g |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Material: Steel · Surface: burnished · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Total length: 130 mm · Area of application: (Dis)assembly tool · Number of components: 7 pcs · Width across flats: 10 mm · Width across flats: 17 mm
EUR 23.60
Meteor piston 40 mm "R" (A8102) | Beta 521 & 512
Nominal diameter: 40 mm · Manufacturer: Meteor · Ø outside piston (A): 39.97 mm · Compression height (C): 27.9 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: Flank safety device (FS) · Piston ring height: 1.5 mm · Ø piston pin (B): 12 mm · Weight piston kit: 83 g
EUR 88.90
Meteor piston 40 mm "G" (A8103) | Beta 521 & 512
Nominal diameter: 40 mm · Manufacturer: Meteor · Ø outside piston (A): 39.95 mm · Compression height (C): 27.9 mm · Curvature (D): 4.15 mm · Total piston height (E): 52 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 1.5 mm · Ø piston pin (B): 12 mm · Weight piston kit: 83 g
EUR 88.90
Meteor piston 40 mm "N" (A8104) | Beta 521 & 512
Nominal diameter: 40 mm · Manufacturer: Meteor · Ø outside piston (A): 39.94 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) · Piston ring height: 1.5 mm · Thick piston ring: 1.7 mm · Ø piston pin (B): 12 mm · Weight piston kit: 83 g
EUR 88.90
Explore categories from Piston
Moped fans also bought
Wippermann drive chain No.18 (double reinforced)
Chain type: 415H · Manufacturer: Wippermann · Material: Steel · Surface: blank / oiled · Color: gray · Chain pitch: 1/2" x 3/16" · Number of chain links: 114 pcs · Rolling circumference: 1448 mm · Chain lock type: Spring lock · Ø bore: 4.2 mm · Ø Pin: 4.15 mm
EUR 40.20
swiing® revival needle roller bearing 12/15/14.2 original
Bearing type: Needle sleeve · Manufacturer: swiing® revival parts · Bearing cage: Sheet steel cage · Ø outside: 15 mm · Width: 14.2 mm · Ø inside: 12 mm · Dimension needle bearing: 12/15 x 14.2 · Alternative version of the Pony OEM number: A4222 · Tomos OEM number: 035548 · Alternative version of the Sachs OEM number: 0232 155 001
EUR 10.60
swiing® revival clamping screw with slotted chain guard black | Pony GTX, GTA & KTM GP40
Manufacturer: swiing® revival parts · Material: Plastic · Material: Steel · Surface: galvanized (blue) · Color: black · Thread type: Sheet metal screw · Nominal diameter (thread): 5 mm · Drive: External hexagon · Drive: Slot · Width across flats: 19 mm · Screw head: Hexagon · Ø External head: 19 mm · Total length: 29 mm · Thread length: 18 mm · Number of components: 1 pcs · Pony OEM number: P0420
EUR 2.85
swiing® revival stud bolts M6 x 116 mm galvanized (10.9 strength)
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Diameter: 5.9 mm · Thread type: M6x1 (standard thread) · Nominal diameter (thread): 6 mm · Total length: 116 mm · Thread length: 15 mm · Thread length: 23 mm
EUR 3.45
swiing® revival gasket set cylinder original engine | Beta 521, 512
Manufacturer: swiing® revival parts · Material: Copper · Area of application: Original · Material: Sealing carton · Material: Sealing paper · Material: Sheet metal (steel) · Number of components: 3 pcs · Ø cylinder: 40 mm · Ø outlet inside: 22 mm · Hole spacing outlet: 40 mm · Hole pattern [mm]: 48 x 48 mm · Decompressor: Yes
EUR 16.50












