46 mm piston with a 2 mm and a 1.5 mm rectangular piston ring and internal circlip (IS) for Piaggio mopeds / mopeds with Athena cylinder kit.
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.
| Nominal diameter | 46 mm |
| Manufacturer | Athena |
| Ø outside piston (A) | 45.93 mm |
| Ø piston pin (B) | 12 mm |
| Compression height (C) | 26.05 mm |
| Curvature (D) | 3 mm |
| Total piston height (E) | 51.05 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | L-ring, Rectangular ring |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 2 mm, 1.5 mm |
| Tolerance group | A |
| Weight piston kit | 96 g |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
Ratings
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Nominal diameter: 46 mm · Manufacturer: Athena · Ø outside piston (A): 45.93 mm · Compression height (C): 26 mm · Curvature (D): 2.92 mm · Total piston height (E): 51 mm · Number of piston rings (F): 2 pcs · Piston ring mold: L-ring · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.5 mm · Piston ring height: 2 mm · Ø piston pin (B): 10 mm · Weight piston kit: 94 g
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Athena piston 46 mm (12 mm KoBo) #B | Piaggio Ciao, SI, Bravo, Boxer
Nominal diameter: 46 mm · Manufacturer: Athena · Ø outside piston (A): 46.03 mm · Compression height (C): 26.05 mm · Curvature (D): 3 mm · Total piston height (E): 51 mm · Number of piston rings (F): 2 pcs · Piston ring mold: L-ring · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.5 mm · Piston ring height: 2 mm · Ø piston pin (B): 12 mm · Tolerance group: B · Weight piston kit: 95 g
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Manufacturer: Athena · Cheek type: standard · Ø coupling pin / vario pin: 12 mm · Crankshaft stroke: 43 mm · Connecting rod length center-center: 85 mm · Number of gears: 1 pcs · Total length crankpin ignition side: 91.6 mm · Thread type: M8x1.25 (standard thread) · Ø Connecting rod eye: 15 mm · Ø piston pin (B): 12 mm · Ø Bearing seat (clutch side): 15 mm · Ø Bearing seat (ignition side): 15 mm · Area of application: Racing · Dimension needle bearing: 12 / 15 x 14.7 mm (axe 12) · Wide crank webs: 33 mm · Length 1st paragraph: 21.9 mm · Length 2nd paragraph: 43.2 mm · Length 3rd paragraph: 63.5 mm
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