1--Upgraded Metal Gear for Bafang BBS01/02B/BBSHD/G320/G340

2--Weight:BBS01/02/G340:240g;BBSHD/G320:237g

3--Metal gears are Sturdy, Strong, and Durable,CNC Machining Technology, Gear Precision Level 6

4--Because it is made of metal,the noise of metal gear is higher than of nylon ears, but it does not affect the riding experience, and it can not be felt when riding

Video:https://youtu.be/lWRf0JGWHNs  

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Email: topbikekit@hotmail.com