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CeramicSpeed Oversized Pulley Wheel System for Shimano 9100/8000 Series – Coated Bearings, Alloy Pulley, Carbon Cage, Red

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The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design.

  • Features a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimization of the rear derailleur