ALL MTB Models 12 speed. Shimano 12 Compatible Larger Pulleys + High Precision Bearings = Lower RPM x Lower Drag = Less Watt Waste. OMNI Racer Ti Ceramic Derailleur Pulleys 9/10 speed Dura Ace Ultegra XTR: PURPLE.
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ALL MTB Models 12 speed. Shimano 12 Compatible Larger Pulleys + High Precision Bearings = Lower RPM x Lower Drag = Less Watt Waste. OMNI Racer Ti Ceramic Derailleur Pulleys 9/10 speed Dura Ace Ultegra XTR: PURPLE.
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