The large-diameter pulley reduces the load and achieves better power efficiency. The pulley tooth tips feature our unique narrow-wide design "X-ODON" technology. Also provides smooth shifting and saves wattage. Compact upper pulley Optimizes shifting performance with carbon pulley reduces chain noise Number of teeth/material of pulley: 14 x 18T / Carbon Cage: Normal only Cage material: Carbon composite Bearing: Full ceramic RD type: MD1 ◤ List of RD compatible models SHIMANO MD1: XTR M90xx, XT M80xx, SLX M7000, GRX RD-RX812/817 The situation differs under various circumstances, including not only the pulley size and number of sprocket teeth, but also the frame design and chain length. We cannot provide reliable answers to questions about whether or not it can be used or whether it can be handled. *Requires assembly and maintenance by a professional shop with specialized knowledge. Please consult a specialty store with specialized knowledge regarding suitability and installation. *The full ceramic type uses ceramic materials for both the ball and race, and has a sealless structure. Regular bearing cleaning is required to maintain performance. Please be careful.




Size: ‎Small
Material: ‎Plastic
Packing size: ‎19.4 x 13.7 x 5.3 cm; 170 g