ROTOR 公路 Q齒環 BCD110x5 外齒環 黑色

Weight:
148g per set 50/34

Sizes:
Outer - 53, 52, 50, 46, 44t
Inner - 42, 39, 38, 36, 34t

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Characteristics:

• - 100% CNC-machined, 7075-T6 aluminum alloy
• - Steel shifting pins
• - 5 OCP points (4 points in 50/34)
• - Designed to work with all 9, 10 and 11 speed groupsets
• - Some cranks require specific Q-Rings