Barrel bearing race in front of the clutch freewheel on the following mopeds with Beta 521 engine:
Inner diameter: 24 mm 
Outer diameter: 32 mm 
Height: 5 mm 
Original spare part number: A8120
| Manufacturer | Pony | 
| Ø inside | 24 mm | 
| Material | Steel | 
| Surface | Hardened | 
| Width | 5 mm | 
| Ø outside | 32 mm | 
| Pony / Cilo (Beta 521 & 512) | Beta 521 (engine) | 
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