Sell Aluminum Alloy Bicycle Bearing Derailleur 11/13T Mountain Road Bike Rear Derailleur Pulley Roller Bearing Wheel Parts best price

Features: 1.Rotation is silky, no maintenance is required in the later stage, high transmission efficiency, and more labor-saving riding 2.Made of aluminum alloy gears and metal bearings, lubricating and wear-resistant 3.The deep tooth guide wheel can effectively reduce the chain drop, the speed change is clearer, and the winding is more stable 4.Suitable for all cycling applications, whether it is road, MTB, or triathlon, these pulley wheels will optimize your speed rear derailleur with reduced friction and extended lifetime. 5.Being the fastest spinning bearings on your bike, an upgrade with our high-performance pulley wheels are an effective way to save energy or ride faster. Notice: Please allow 1-3cm deviation due to manual measurement Actual color may be slightly different from the image due to different monitor and light effect Description: Material:Aluminum Alloy+Steel Diameter: 11T: 41MM 13T:49MM Include: 1X Bicycle Bearing Derailleur (with accessory)