Drive sprocket with cone mount and external thread for the following mopeds with Beta 521 engine:
Diameter small cone: 12.8 mm 
Diameter cone large:14.4 mm 
Total width: 13 mm 
Trigger thread: M24x1.5 mm
Spare part number: A8311
German quality product from the manufacturer ESJOT in original equipment quality.
| Chain type | 415H | 
| Chain pitch | 1/2" x 3/16" | 
| Ø inside | 14.6 mm | 
| Thickness | 4.4 mm | 
| Manufacturer | ESJOT | 
| Material | Steel | 
| Surface | varnished | 
| Thread type | MF24x1.5 (fine pitch thread) | 
| Number of teeth | 12 pcs | 
| Recording type | Cone mounting | 
| Total thickness | 13 mm | 
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) | 
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