Motorcycle Engine Parts/Sprockets, Corrosion Resis
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Materials:
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Big sprocket: 45# steel
Small sprocket: 40CRMO
Materials:<ul>
Big sprocket: 45# steel
Small sprocket: 40CRMO</ul>
Teeth: front 13/14/15/16/17 and more, rear 35/39/40/42/43/44/46/47/48/49/50/51/52/53/56/57
Corrosion resistance, elegant durability
Front sprocket, heat treatment, HRC25 to 40, rear sprocket HRC35 to 50