The Shimano Alivio SGS RD-M4000 Shadow Rear Derailleur, Silver - 9-Speed offers a super-low profile concept with SHADOW RD technology, intended for more aggressive riding. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is consistent smooth and silent performance.
Super low-profile concept with SHADOW RD technology for less trouble
All of the bikes we sell online are built and inspected by our qualified mechanics – just like when you buy a bike from one of our stores. All you’ll need to do when you receive the bike is straighten the handlebars and attach one of the pedals. This service is free, and included every time you buy a bike. Find out more.