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GLFILL CNC Pulley Rear Derailleur 12/14T Wheel Si3N4 Ceramic Bearings Lightweight Design Improved Speed Change Performance 12T Gold

<ul><li>【Lightweight Design】The 12T wheel weighs only 8g, and the 14T wheel weighs only 14g, providing a lightweight solution for MTB and Road Bike enthusiasts.</li><li>【Si3N4 Ceramic Bearings】The pulley features Si3N4 ceramic bearings that are highly resistant to deformation, cold and high temperatures. These bearings offer excellent wear and resistance, high transmission efficiency and effortless riding.</li><li>【Extended Service Life】The unique design of the Si3N4 ceramic bearings reduces the centrifugal effect of the outer ring by 40% when rotating, significantly extending the service life of the wheel.</li><li>【Improved Speed Change Performance】The wide and narrow tooth profile allows for a closer fit and reduces the gap, resulting in shorter speed change response time and improved overall speed change performance.</li><li>【for durable and Practical】Made of aluminum alloy, this rear derailleur pulley is not only for durable but also practical. It is compatible with MTB, Road Bike, and other bikes, offering use for different cycling needs.</li></ul>

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Feature:* Road Bike Ceramic Bearing CNC Pulley Rear Derailleur 12/14T Wheel&nbsp;*light design, 12T only 12.8g, 14T only 14g*Si3N4 ceramic bearings are not easily deformed by force, and are resistant to cold and high temperature, wear and resistance, high transmission efficiency, and more labor-saving riding*Si3N4 ceramic bearings Design,When rotating, the centrifugal effect of the outer ring can be reduced by 40%, and the service life is greatly extended*The wide and narrow tooth profile fits more closely and reduces the gap, which can shorten the speed change response time and improve the speed change performance to a certain extent.*Deepen the tooth marks to reduce the chain loss, optimize the inclined tooth shape, and synchronize with the chain transmission direction, so that the chain entry and chain release are smooth*Made of high quality aluminum alloy material, and practical to useSpecification:*Material: Aluminum alloy + ceramic*Opt Color: Black,Red, Gold(As Pictures Show)*Opt Type: 12T/14T*Size: 50*50mm (12T)/57*57mm(14T)*Weight: About 12.8g (12T)/ 14g (14T)*Applicable screw aperture: 4/5/6mm*Applicable transmission : 8/9/10/11 speed*Compatible: for ,Road Bike etc.&nbsp;Package Includes:1 x Rear Derailleur Pulley2 x AdapterNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.