MEROCA R8000 Series Bike Oversized Rear Derailleur Pulley Wheel System with Double 16T SprocketsBlack

Feature: 1. 7075 Aluminum: Adopts 7075 aluminum alloy guide plate, high strength, not easy to break, strengthened rocker arm support structure is safe. 2. Stable Speed Changing: Speed change will be stable and fast, will not make you feel any discomfort, providing a satisfying using experience. 3. 16 Tooth Pulley Wheel: 16 tooth bearing guide roller pulley wheel, can more precisely match the chain, reduce the transverse space, shorten the speed change response time, improve the speed change efficiency. 4. Ceramic Bearing: Aluminum alloy guide wheel with ceramic bearing, friction power consumption has reduced, climbing is more energy saving, effectively improve the stepping frequency. 5. Package Content: The package contains only a bike derailleur pulley cage, other accessories and tools need to be prepared by yourself. Specification: Item Type: Bike Derailleur Pulley Cage Material: Aluminium Alloy Application: For R8000 8050 9100 9150 9170 Tiagra Guide Wheel Group Weight: Approx.138g 4.9oz. Package List: 1 x Oversized Rear Derailleur Pulley Wheel System Note: Different models of rear pulley wheel system have different installation base. Please disassemble the original parts for comparison before purchase.