Number of teeth: 15 Material: Chromium molybdenum steel (SCM) Heat treatment: carburizing and nitriding treatment Surface Preparation: Iron 433 oxide film treatment (black) Durability: 10000km-30000km
[Manufacturer Part no.] JTF1381.15RB Chain pitch : 520 Front sprocket teeth count : 15 Front sprocket type : 1381 Material : Steel Front sprocket version : Noise-free
control number:25547750 [Manufacturer part number]2042G.16.18. NC ChainPitch:520 Front sprocketType:2042 Material:Steel Front sprocketType:Sirens Front sprocket number:16