Swtxo Road Bike Rear Derailleur for Shimano R8000/8050/8070/9170,sd4

100% Band new and high quality.Durable & Strong: 13T top pulley and 17T bottom pulley is made of aluminium alloy 7075, which prolongs the lifetime even further. Because of the fully CNC craftsmanship, this shiny derailleur gives your bike a more stunning look.Light-weight: Thanks for the alloy body design, the cage is only 84g. Upgrading your derailleur cage not only increases resistance to contamination and corrosion but also helps saving energy during the long period of riding.Ceramic Bearing Pulleys: The durable ceramic balls are harder and smoother, resulting in longer life and less vibration. Ceramic balls are non-metallic meaning no magnetic build-up and longer life due to no micro-welding between balls and races. So, just enjoy this efficient and effortless smoothness which brings you the optimised experience.High Wear-resistant and excellent durability.Specifications:Guide wheel specifications: 13T/17TSuitable: road/folding bicycles above 20 inchesGuide wheel weight: 13T (14g) 17T (16g)SD4: for SHIMANO:R8000/8050/8070/9170/9150/9100Colour: BlackMaterial: 7075 aluminum alloyPackage Contents:1 x Bicycle DerailleurOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.