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ROTOR 山地 Q齒環 - BCD104x4 - 中齒環 - X2 - 黑色
Q-RINGS QX2 104BCD ??Shred????you don´t usually take advice from the office recycling bin but your favorite trail begs to be ridden so you obey. QX2 chainrings for your double 104/64BCD cranks...
ROTOR 場地 圓齒環 - BCD144x5 - 1/8'' - 黑色
Given the unique requirements of track cycling and fixie riding, you need a super stiff chainring able to respond to your fast-twitch muscle action and high power outputs. Aero, stiff, and...