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產品特色 Freewheel: 16T / 17T / 18T 9P-108clicks / 6P-72clicks / 6P-636 clicks crank: forged 7075/ 6061+100% CNC Length: 160-175mm Finish & colou...

產品特色 Belt drive, more simple, more environmentally friendly with customize teeth with drainage holes suit America and European countries use ...

產品特色 classical style customize spec accept small quantity 產品規格 classical style customize spec accept small quantity